Read the following passage and questions, then choose the right answer from options, the answer should be one of A, B, C, D.

<passage>:
My Father's Estate A letter from an ill-mannered former high-school classmate of long ago, one of several like it, which I pass on in paraphrase: "I saw that your father had died," she wrote. "He was always so clever about money. Did he leave you a big estate? Did he figure out a way around the estate tax?" It's a rude question, but it has an answer. He grieved like a banshee when my mother died in 1997 and never really got over the loss of a soul mate of 61 years, who literally dreamed the same dreams he did. Once, he wrote my mother a poem (which he called "Route 29") about the beauty of Route 29 north of Charlottesville, Va., and the pleasure of riding along it with my mom. He filed it away for further work and never touched it again. The day after my mother's death, he found it--with her reply poem telling of how she hoped to never see those hills and those clouds and those cattle with anyone else but Pop. She had written her poem (which she titled "Only You") and put it back in the file without ever telling him. He survived that terrible loss with the help of a beautiful widow, whom he also came to appreciate and live for. He probably spent more time trying to help her with an annuity problem than he ever did on any financial feature of his own life. A simple call from her inviting him to dinner in her kitchen on Kalorama Circle was enough to make his life complete. Even in his hospital bed, hearing my son's voice on the phone could make him smile through the fear and the pain. ("He sounds so sweet when he calls me 'Grandpa,' " my father said, beaming even with tubes in him.) He could form attachments readily. Even in his last days in the hospital, he took a liking to a Ukrainian-born doctor and used to refer to him as "Suvorov," after the Russian general written of glowingly in War and Peace-- which still sits on the table next to his reading chair, with his notes on little pieces of paper in it. My sister and I have been going through my father's estate lately with his lawyer, and we're pawing through old, dusty files to find bank account numbers and rules for annuities, so maybe it's a good time to think about what my father, Herbert Stein, left to us. He did indeed leave some money. By the standards we read about in the Wall Street Journal or Sports Illustrated , it was not worthy of much ink. In any event, because of the class-warfare-based death tax, the amount that will be left is vastly less than what he had saved. As an economist, my father was famous for defending taxes as a necessary evil. But even he was staggered, not long before his death, when he considered the taxes on his savings that would go to the Internal Revenue Service. The nest egg is going to be taxed at a federal rate of about 55 percent, after an initial exemption and then a transition amount taxed at around 40 percent (and all that after paying estate expenses). When I think about it, I want to cry. My father and mother lived frugally all their lives. They never had a luxury car. They never flew first-class unless it was on the expense account. They never in their whole lives went on an expensive vacation. When he last went into the hospital, my father was still wearing an old pair of gray wool slacks with a sewed-up hole in them from where my dog ripped them--15 years ago. Most of all, my father believed in loving and appreciating those persons close to him. He stayed close to all his pals from the Nixon days (and would not hear personal criticism of Pat Buchanan, who had been a friend and colleague, although he was bewildered by Pat's stands on many issues). He basked in the pleasure of the company of his colleagues and friends at the American Enterprise Institute, which he thought of as one of his three homes--the Cosmos Club and his extremely modest but well-situated apartment at the Watergate were the others. This quality of devotion and the rewards I get from it are worth far more than any stocks or bonds in my father's estate--and cannot be taken away at the marginal rate of 55 percent. Plus, I can pass it on to my son without any generation-skipping surcharge. This good name cannot be taxed at all, at least not right now. My sister and I and our children will have it for as long as we keep it clean. It's priceless, incalculable in value. So, in answer to the query from the forward high-school classmate, "Yes, my father did leave an immense estate, and yes, he did manage to beat the estate tax." The only problem is that I miss him every single minute, and I already had the best parts of the estate without his being gone, so the death part is pure loss. Never once did my sister or I ever ask him for help that he hesitated, let alone declined, to give. Usually this was some research we were too lazy to do, but which he did without any resistance at all. When I was a child and had a chore like leaf raking that I didn't want to do, his simple answer was to say, "Let's do it together. It'll take half as long." I use that with my son almost every day, along with the devotion, and my father's example about his friends from long ago to make my life work. He stayed close with friends from Williams College Class of '35, especially Richard Helms of the CIA. He had lunch with one of his pals from Williams, Johnny Davis, class of '33, who got him a job as a dishwasher at Sigma Chi, days before he went into the hospital. They never had live-in help. My father washed the dishes after my mother made the meatloaf. My father took the bus whenever he could. His only large expenditure in his and my mom's whole lives was to pay for schools for his children and grandchildren. He never bought bottled, imported water Long after, when Nixon was blasted as an anti-Semite, my father told in print and in person of the Nixon he knew: kind he said whatever came out of the tap was good enough for him. They still used bargain-basement furniture from before the war for their bedroom furniture and their couch. I never once knew them to order the most expensive thing in a restaurant, and they always took the leftovers home. This reassurance--that somehow things will be all right, that there is a lot of ruin in a man, as well as in a nation, to paraphrase his idol, Adam Smith--has become part of me, and I can still summon it up when I am terrified because of a huge quarterly tax payment due or a bad day on the market. Again, the IRS taxes it at zero. My father himself, as far as I know, inherited no money at all from his father. He did inherit a belief that hard work would solve most problems, that spending beyond one's means was a recipe for disaster, that flashy showoff behavior with borrowed money was understandable but foolish. He did inherit enough common sense to tell his son that buying property he would never live in was probably a bad mistake. (He rarely spoke in moral absolutes. He believed instead that humans could and would make individual choices but that there were surely consequences to those choices that could be considered.) He passed these beliefs on to me, although they have become somewhat attenuated by my 20-plus years in the fleshpots of Hollywood. Still, I am one of the only men I know here who has never been drastically short of money (so far), and that I attribute to hearing his rules of prudence.

<question>:
What was the relationship like between the son and his mother?

<options>:
A His mother needed to make decisions about the estate when his father passed and he was in disagreement about how they should be made
B Their relationship seems to have been pleasant and he knows how much she meant to his father
C His mother needed a lot of help when his father passed away and he was happy to be there for her
D She passed away early in her son’s life

<answer>:

B