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

<passage>:
he said finally. "Maybe we ought to be getting on to the Pschorrbräu tent." "Maybe we ought to eat something first," I said. "I'm beginning to feel this. We could get some of that barbecued over to my desk and looked down at looked up from her magazine. She said "There's supposed to be considerable nourishment in beer." That made sense. I yelled, " mildly, "You're late." his tongue over his teeth in distaste, groaned, fumbled in a drawer for the aspirin bottle. He looked over at Betty and said, almost as though reciting, "What I "Providence," Simon told her whilst fiddling with the aspirin bottle, hotel?" That seemed like a good question. I thought about it for a while. Finally down the drain and was caught in the elbow. Something that would net "Lost track," Arth said. "You can come home with me." We drank to that and the fog rolled in again. When the fog rolled out, it was about fifty dollars." Simon said, mournful of tone, "Money," Simon said. "When you other bed, also completely clothed, was Arth. That sun was too much. I stumbled up from the bed, staggered to the window and fumbled around for Simon said, enigmatically, "Now Simon said unenthusiastically, the bed holding his bald head in his hands. "I remember now," he sorrowed. "You didn't have a hotel. What a stupidity. I'll be phased. Phased all the way down." "You haven't got a handful of aspirin, have you?" I asked him. "Just a minute," Arth said, staggering in the phone book says you'll investigate erect and heading for what "All right," I told him plaintively. "I'm clean. I won't mess up the place. All I've got is a hangover, not lice." Arth was gone. He came back in Simon continued to say nothing she two or three minutes, box of pills in I took the pill, followed it with a glass of water. And went out like a light. "Why?" "Why?" Simon said, "Let's get to the point, everybody upped with their king-size mugs and drank My head was killing me. "This is where I came in, or something," I groaned. Arth said, "That was last night." He looked at me over the rim of his beer mug. and then remembered. "I've got to get my bag. Oh, my head. Where did we spend last night?" Arth said, and his voice sounded cautious, "At my hotel, don't you remember?" "Not very well," I admitted. "I feel lousy. I must have dimmed out. feel him watching after me as I pushed through the tables on the way out. Simon seemed incapable of carrying the ball this morning, so Betty to lose my bag didn't help. I worked Simon put in a word. "The usual time traveler returned to a period of twenty-five years ago and shot Hitler, especially accompanied by a blockbusting hangover. I didn't get anywhere tearing my hair and complaining from one end then all subsequent history would be changed. In that case, the time traveler Simon shrugged and fumbled again with the aspirin bottle. Mr. Oyster went on. "I've been nobody should drink a gallon or more of Marzenbräu. I decided the hell with it. I took a cab to the airport, presented my return ticket, told them I wanted to Simon held up a hand. "There's their perch, bug-eyed Simon, but then Simon said, "You want to hire me evidently. The trip back was as uninteresting as the one over. As the hangover began to wear off—a little—I was almost sorry I hadn't been able to stay. If I'd only been able to get a room I would have stayed, I told myself. the office rather than going to my apartment. I figured I might as well check in with Betty. he had been occupying four—or was it five—days before when I'd left. I'd lost track of the time. Betty and Simon waited. I said to him, "Glad you're here, sir. I can report. Ah, what was it hangover. "Came for?" Mr. Oyster snorted. party." He began to swing into the spirit of his description. "It originally "I'm merely waiting for your girl to started in celebration of the wedding make out my receipt. I thought you had already left." said. There was suddenly a double dip of ice cream in my stomach. I walked Mr. Oyster was saying something to the effect that if I didn't leave today, it would have to be tomorrow, that he hadn't ponied up that thousand dollars advance for anything less than immediate service. Stuffing his receipt in his wallet, he fussed his way out the door. I said to Betty hopefully, "I suppose you haven't changed this calendar since I left." Betty said, "What's the matter not half an hour ago, just before this marble-missing client came in." She added, irrelevantly, "Time "Well," the old boy pursued, into "Never saw him before in my life," she said. "Not until he came in this morning." "This morning," I said weakly. While Betty stared at me as though it was who didn't know exactly how to wear his clothes correctly, or was off the how long ago did I go out that door—on the way to the airport?" "You've been acting sick all morning. You went out that door about ten minutes ago, were gone about "But why would a time traveler three minutes, and then came back." Simon's story), "did you Simon shrugged, put one hand to orgies. You wouldn't want to wander up and down the streets of, say, He slammed the door after him as he left. Simon winced at the noise, took the aspirin bottle from its drawer, took two, washed them down with unmasked." The old boy wound it up. "Well, Simon was shaking his head. "Not "I did," Simon groaned. "Three times." Simon "Sorry," Simon said. "Can't be done." "I keep telling you," Simon said "Out of the question," Simon "Just for laughs," Simon told the two of them sourly, "suppose I tell you a funny story. It goes like this:" Simon said wearily, "There's just one thing you can bring back with you from the future, a hangover compounded of a gallon or so of Marzenbräu. What's more you can pile I hustled back to the apartment and packed a bag. Hell, I'd wanted a vacation merry-go-round and pile a fourth hangover on the three I'm already nursing, all at once, you can think again." is over before September 21st, first day of the gigantic beer bust. hours. I had another suspicious twinge. kraut and pretzels. I found a place finally at a table which had space for twenty-odd beer Simon said nothing. Across the up, ranging from a seventy- or eighty-year-old couple in Bavarian costume, to the bald-headed drunk across the table from me. A desperate waitress bearing six mugs of beer in each hand scurried past. They call them masses over eighteen per cent. That's nonsense. No beer is that strong." I took a long pull. He looked at me, waiting. I came up. "Mistaken," I admitted. Shouldn't have said that." I had never heard of the brand so I skipped it. didn't seem to hang together very well. Name is Simon." G'sufa everybody upped with the mugs and drank each other's health. was the smallest amount obtainable. A beer later I said, "I don't know if you'll make it or not, Arth." "Make what?"

<question>:
Why does Simon look for aspirin as soon as he gets to his office?

<options>:
A He is experiencing caffeine withdrawal and did not have time to stop for coffee.
B We never learn the cause of the headache, we only know that it is severe.
C He has a hangover from attending a festival.
D He was out drinking with some friends the night before, and has a hangover.

<answer>:

C