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 muck-grubber!" Under-Secretary barked. "Gracious, no," Magnan said. "I love reports." "It seems nobody's told the Aga Kagans about fiscal years," Retief said. "They're going right ahead with their program of land-grabbing on appreciate your guidance." "There is a little something further," said Retief, sitting solidly in his chair. "What's the Corps going to do about the Aga Kagans?" "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. They've landed thirty detachments of 'fishermen'—complete with armored trawlers mounting 40 mm infinite repeaters—and another two dozen "They tried to get the Aga Kagans to join in and help them beat back some of the saurian wild life that liked to graze on people. The Corps didn't like the idea. They wanted to see an undisputed anti-Concordiatist enclave. The Aga Kagans didn't want to play, either. "I'm warning you, Retief!" the Under-Secretary snapped, leaning this invasion, they would have hit them before now." "That would have been a mistake," said Retief. "The Aga Kagans are tough customers. They're active on half a dozen worlds at the moment. of escorts—preferably strong-arm lads." The Chef d'Regime frowned, blew out a cloud of smoke. "I wasn't kidding about these Aga Kagans," he said. "I hear they have some nasty habits. I don't want to see you operated on with the same knives they use to skin out the goats." "A little muscle in the background is an old diplomatic custom," Retief trio of Aga Kagan cavaliers. "May the creatures dine well ere they move on." "Hah! The goats of the Aga Kaga graze on the lands of the Aga Kaga." The leader edged his horse close, eyed Retief fiercely. "We welcome no intruders on our lands." "The hen has feathers, but it does not fly," Retief said. "We have "Only love makes me weep," Retief said. "I laugh at hatred." Retief puffed at his cigar, eyeing the Aga Kagan cheerfully. The youth in the rear moved forward, teeth bared. "Never give in to the fool, lest he say, 'He fears me,'" Retief said. axe?" he enquired rhetorically. "You shall visit the Aga Kaga, then. Move on! And make no attempt to escape, else my gun will speak you a by a handmaiden, belched loudly and looked the callers over. Blackbeard cleared his throat. "Down on your faces in the presence of the Exalted One, the Aga Kaga, ruler of East and West." Retief said. "No goat-meat will be required." "Ralph told me you talk like a page out of Mustapha ben Abdallah Katib Jelebi," the Aga Kaga said. "I know a few old sayings myself. For example, 'A Bedouin is only cheated once.'" written, 'Have no faith in the Prince whose minister cheats you'?" "I've had some unhappy experiences with strangers," the Aga Kaga said. "It is written in the sands that all strangers are kin. Still, he who visits rarely is a welcome guest. Be seated." settled themselves comfortably. The Aga Kaga eyed them in silence. "We have come to bear tidings from the Corps Diplomatique grapes. "Modest ignorance is better than boastful knowledge," the Aga Kaga "Whereas the words of kings...." "Very well, I concede the point." The Aga Kaga waved a hand at the serving maids. "Depart, my dears. Attend me later. You too, Ralph. These are mere diplomats. They are men of words, not deeds." The bearded man glared and departed. The girls hurried after him. "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?" "Go ahead." The Aga Kaga kicked a couple of cushions onto the floor, eased a bottle from under the couch and reached for glasses. "The Under-Secretary for Sector Affairs presents his compliments to his Excellency, the Aga Kaga of the Aga Kaga, Primary Potentate, Hereditary Sheik, Emir of the—" "Yes, yes. Skip the titles." Nine, reel 43, as 54 Cygni Alpha, otherwise referred to hereinafter as Flamme—" "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 claim, is that it?" He smiled broadly, offered dope-sticks and lit one. "Call me Stanley," the Aga Kaga said. "The other routine is just to please some of the old fools—I mean the more conservative members "At first glance," Retief said, "it looks as though the places are The Aga Kaga guffawed. "For a diplomat, you speak plainly, Retief. Have another drink." He poured, eyeing Georges. "What of M. Duror? How does The Aga Kaga snorted. "I thought the goats were overdoing it a bit myself," he said. "Still, the graybeards insisted. And I need their support." letting women wait on you, while your betters are out doing an honest day's work." The Aga Kaga looked startled. "Soft? I can tie a knot in an iron bar as big as your thumb." He popped a grape into his mouth. "As for the rest, your pious views about the virtues of hard labor are as childish the damnedest piece of bare-faced aggression—" "Ah, ah!" The Aga Kaga held up a hand. "Watch your vocabulary, my dear sir. I'm sure that 'justifiable yearnings for territorial self-realization' would be more appropriate to the situation. Or 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 realities of popular folk-lore. Let's be pragmatic " Could have been," the Aga Kaga chuckled. He finished the grapes and "You're stretching your analogy a little too far," Retief said. "You're banking on the inaction of the Corps. You could be wrong." "I shall know when to stop," the Aga Kaga said. "Don't worry about Georges. He's a realist, like you. He's prepared to deal in facts. Hard facts, in this case." The Aga Kaga nodded thoughtfully. "What are you getting at?" sit by, wringing its hands, while you embark on a career of planetary piracy." "Isn't it the custom?" the Aga Kaga smiled complacently. "I have news for you, Stanley. In this instance, neck-wringing seems more in order than hand-wringing." The Aga Kaga frowned. "Your manner—" "Never mind our manners!" Georges blurted, standing. "We don't need any lessons from goat-herding land-thieves!"

<question>:
Which of the following is not true about Retief?

<options>:
A He understands the Aga Kagan's language
B He understands the Aga Kagan's culture well
C He does not believe that diplomacy is effective
D He is familiar with the Aga Kagan's custom of speaking in proverbs

<answer>:

C