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

<passage>:
The Aga Kaga's face darkened. "You dare to speak thus to me, pig of a The Aga Kaga wanted peace—a Flamme. So far, I've persuaded the Boyars that this is a matter for the his chair. "What's the Corps going to do about the Aga Kagans?" "Sixty years ago the Corps was encouraging the Boyars to settle "I don't believe you'll find that in writing," said the Under-Secretary blandly. "In any event, that was sixty years ago. At that time a the situation has changed." "The Boyars have spent sixty years terraforming Flamme," Retief said. "They've cleared jungle, descummed the seas, irrigated deserts, set out forests. They've just about reached the point where they can begin to enjoy it. The Aga Kagans have picked this as a good time to move in. "The Boyars needed some co-operation sixty years ago," Retief said. "They tried to get the Aga Kagans to join in and help them beat anti-Concordiatist enclave. The Aga Kagans didn't want to play, either. But now that the world is tamed, they're moving in." "The exigencies of diplomacy require a flexible policy—" "I want a firm assurance of Corps support to take back to Flamme," diplomatic triple-speak. They just want to hold onto the homes they've includes no inflammatory actions based on outmoded concepts. The Boyars still and watch it happen. If I don't take back concrete evidence of Corps backing, we're going to have a nice hot little shooting war on our hands." with deep concern an act of open aggression, or merely point out an apparent violation of technicalities...." in the diplomatic give-and-take." "Not that natural geological processes wouldn't have produced the same results, given a couple of hundred million years." "Don't belabor the point," the Boyar Chef d'Regime said. "Since we seem call that a first-class atrocity." "Retief, on your say-so, I've kept my boys on a short leash. They've put up with plenty. Last week, while you were away, these barbarians sailed that flotilla of armor-plated junks right through the middle of here that's been outfitting for the last four weeks. If I hadn't held them back with assurances that the CDT would step in and take care of this invasion, they would have hit them before now." "That would have been a mistake," said Retief. "The Aga Kagans are They've been building up for this push for the last five years. A show of resistance by you Boyars without Corps backing would be an invitation to slaughter—with the excuse that you started it." "Those goat-herders aren't all they seem. They've got a first-class modern navy." "I've seen 'em. They camp in goat-skin tents, gallop around on animal-back, wear dresses down to their ankles—" about these Aga Kagans," he said. "I hear they have some nasty habits. "Fifty years ago this was bare rock," he said. "We've bred special strains of bacteria here to break down the formations into soil, and we followed up with a program of broad-spectrum fertilization. We planned trio of Aga Kagan cavaliers. "Hah! The goats of the Aga Kaga graze on the lands of the Aga Kaga." Retief puffed at his cigar, eyeing the Aga Kagan cheerfully. The youth the Exalted One, the Aga Kaga, ruler of East and West." them. The reclining man sneezed violently, wiped his nose on another silken scarf and held up a hand. "Night and the horses and the desert know me," he said in resonant tones. "Also the sword and the guest and paper and pen—" He paused, wrinkled his nose and sneezed again. "Turn off that damned Jelebi," the Aga Kaga said. "I know a few old sayings myself. For example, 'A Bedouin is only cheated once.'" "We have no such intentions, Excellency," Retief said. "Is it not "I've had some unhappy experiences with strangers," the Aga Kaga said. settled themselves comfortably. The Aga Kaga eyed them in silence. "Modest ignorance is better than boastful knowledge," the Aga Kaga "Very well, I concede the point." The Aga Kaga waved a hand at the "Now," the Aga Kaga said. "Let's drop the wisdom of the ages and get down to the issues. Not that I don't admire your repertoire of platitudes. How do you remember them all?" "Diplomats and other liars require good memories," said Retief. "But Excellency, the Aga Kaga of the Aga Kaga, Primary Potentate, Hereditary "Come to the point," the Aga Kaga cut in. "You're here to lodge a complaint that I'm invading territories to which someone else lays The Aga Kaga guffawed. "For a diplomat, you speak plainly, Retief. Have The Aga Kaga snorted. "I thought the goats were overdoing it a bit The Aga Kaga looked startled. "Soft? I can tie a knot in an iron bar "Ah, ah!" The Aga Kaga held up a hand. "Watch your vocabulary, my exploited peoples' might fit the case. Aggression is, by definition, an activity carried on only by those who have inherited the mantle of Colonial Imperialism." "Imperialism! Why, you Aga Kagans have been the most notorious planet-grabbers in Sector history, you—you—" "Call me Stanley." The Aga Kaga munched a grape. "I merely face the historical association. Some people can grab land and pass it off lightly as a moral duty others are dubbed imperialist merely for And I shall continue to take every advantage of it." "We'll fight you!" Georges bellowed. He took another gulp of whiskey and slammed the glass down. "You won't take this world without a his glass was filled. The Aga Kaga held the glass up to the light. "Excellent color, don't you agree?" He turned his eyes on Georges. "It's pointless to resist," he said. "We have you outgunned and outmanned. Your small nation has no chance against us. But we're prepared to be generous. You may continue to occupy such areas as we do not immediately require until such time as you're able to make other We shall inch our way to empire—and those who stand in our way shall be dubbed warmongers." "I see you're quite a student of history, Stanley," Retief said. "I wonder if you recall the eventual fate of most of the would-be empire nibblers of the past?" "Ah, but they grew incautious. They went too far, too fast." "The confounded impudence," Georges rasped. "Tells us to our face what he has in mind!" "An ancient and honorable custom, from the time of have been," the Aga Kaga chuckled. He finished the grapes and began peeling an orange. "But they never were. Hitler could have been stopped by the Czech Air Force in 1938 Stalin was at the mercy of the It has been the fate of your spiritual forebears to carve civilization from the wilderness and then, amid tearing of garments and the heaping "I shall know when to stop," the Aga Kaga said. "Yes, perfectly so," the Aga Kaga said. "None would dare to intrude in The Aga Kaga nodded thoughtfully. "What are you getting at?" "Isn't it the custom?" the Aga Kaga smiled complacently. The Aga Kaga frowned. "Your manner—"

<question>:
What is true of the relationship between the Boyars and the Aga Kagan?

<options>:
A They have been at war for thousands of years
B They are newly engaged in violent conflict
C They are ruled by similar systems of governance
D They have never before been at war

<answer>:

D