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

<passage>:
Sly, brave and truculent, the Qornt held all humans in contempt—except one! [Transcriber's Note: This etext was produced from they had appeared. There was no record of where they went." He paused for effect. "They have now reappeared—occupying the inner planet of this system!" "But we must select a leader!" "That won't be necessary, boys. I'm your new leader." glass, "you Qornt like to be warriors, but you don't particularly like to fight." "We don't mind a little fighting—within reason. And, of course, as to advise that he will require the use of his outer world on the thirtieth day. Then will the Qornt come with steel and fire. Receive, Terrestrials, renewed assurances of my awareness of your existence, and let Those who dare gird for the contest. government over to the Verpp? They seem a level-headed group." "We have been served, gentlemen, with nothing less than an Ultimatum!" frowns to settle into place. "Note, gentlemen, that these invaders have appeared on terrestrial controlled soil—and without so much as a flicker from the instruments the new Qornt stepping on our heels—" "I've lost the thread," Magnan said. "Who are the new Qornt?" "After estivating, the Verpp moult, and then they're Qornt, of course. The Gwil become Boog, the Boog become Rheuk, the Rheuk metamorphosize into Verpp—" "You mean Slun and Zubb—the mild-natured naturalists—will become warmongers like Qorn?" "Very likely. 'The milder the Verpp, the wilder the Qorn,' as the old saying goes." "What do Qornt turn into?" Retief asked. "Hmmmm. That's a good question. So far, none have survived Qornthood." "Have you thought of forsaking your warlike ways?" Magnan asked. "What try conclusions with these fellows until we have an indetectible drive Qornt we have to satisfy our drive to action." "Only a dead Qornt stays home when Attack day comes. And even if he orders us all to cut our own throats, there are still the other flamboyant blossoms of yellow and red, reaching down to a strip of white beach with the blue sea beyond. right. All three went down in a tangle of limbs. them." "Those undoubtedly are the most bloodthirsty, aggressive, merciless countenances it has ever been my misfortune to encounter," Magnan said. and faces like that!" The smaller of the two captive Qornt ran long, slender fingers over a bony shin, from which he had turned back the tight-fitting green fly into another rage, you know." "Please, restrain yourself. I was merely somewhat astonished—" a small whistle escaped—"at being taken for a Qornt." look like Qornt." "Oh, not at all—except perhaps to a Terrestrial. The Qornt are sturdily built rascals, all over ten feet in height. And, of course, they do nothing but quarrel. A drone caste, actually." "A caste? You mean they're biologically the same as you?" "Not at all! A Verpp wouldn't think of fertilizing a Qornt." "I mean to say, you are of the same basic stock—descended from a common ancestor, perhaps." "We are all Pud's creatures." "What are the differences between you, then?" "Why, the Qornt are argumentive, boastful, lacking in appreciation evacuees!" "Fifteen or twenty Qornt." "You mean that there are only fifteen or twenty individual Qornt in all?" "I suppose so it sounds like them. A truculent group, you know. And interplanetary relations are Rheuk it's their nest-mending time, you know. The Boog will be busy mating—such a tedious business—and of course the Qornt are tied up with their ceremonial feasting. I'm afraid no one will take any notice of you." "Do you mean to say," Magnan demanded, "that these ferocious Qornt, who high-pitched screeching. "Softly, now. We approach Qornt Hall. They can be an irascible lot when disturbed at their feasting." "In another few weeks, I should imagine, if, as you say, they've sort without reference to the wishes of the majority?" "Oh, the majority of the Qornt favor the move, I imagine." "These few hotheads are permitted to embroil the planet in war?" "Oh, they don't embroil the planet in war. They merely—" "Retief, this is fantastic! I've heard of iron-fisted military cliques before, but this is madness!" tattered banners, scarred halberds, pikes, rusted longswords, crossed spears over patinaed hauberks, pitted radiation armor, corroded power rifles, the immense mummified heads of horned and fanged animals. Great paper-thin glass, shone jewel-red and gold through dark bottles—and cast long flickering shadows behind the fifteen trolls at the board. Lesser trolls—beaked, bush-haired, great-eyed—trotted briskly, bird-kneed, bearing steaming platters, stood in groups of three strumming slender bottle-shaped lutes, or pranced an intricate-patterned dance, unnoticed in the shrill uproar as each of the magnificently draped, belted, feathered and jeweled Qornt carried his ship." "Great heavens, Retief!" Magnan exclaimed in a whisper. "It sounds as though these brutes employ a battle armada as simpler souls might a set of toy sailboats!" of the Qornt when presented with the news that two peaceful Verpp anything that annoys the Qornt, it's Qornt-like behavior in others. Now step along, please." followed by Magnan and the tall Verpp. The shrill chatter at the table table. "How about it, fellows? It's war to the knife, eh?" There was a momentary silence from all sides. "I guess so," grunted a giant Qornt in iridescent blue with anyway," he added. "They do whatever I convince them they ought to do." "But I'm sure that on more mature consideration—" "Let them go," the blue and flame Qornt said glumly. "You can do better than that," Qorn hooted. "Now here's a suggestion: we carve them up a little—lop off the external labiae and pinnae, say—and ship them back." "Good lord! Retief, he's talking about cutting off our ears and sending us home mutilated! What a barbaric proposal!" "It wouldn't be the first time a Terrestrial diplomat got a trimming," they're thinking of giving up without a struggle." "Oh, I doubt that," the blue-and-flame Qornt said. "Why should they?" Zubb screeched, waved the guns. The Qornt were jabbering. "I told you they were brutes," Zubb shrilled. Qorn slammed his fist down on the table. "I don't care what they are!" "That's all right. They don't have one." "But—" "We'll take you on!" Qorn French-horned. "We're the Qorn! We glory in battle! We live in fame or go down in—" "Over my dead body!" "Enough! Let me at the upstart!" clacking against the polished floor. The other aliens—both servitors and bejeweled Qornt—formed a wide circle, all eyes unwaveringly on the combatants. Qorn struck suddenly, a long arm flashing down in a vicious cut at him just below the beak. A screech went up from the crowd as Retief

<question>:
What happens to the Verpp when they moult?

<options>:
A They die.
B They transform into Qornt.
C They transform into  Boog.
D They transform into Rheuk.

<answer>:

B