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

<passage>:
MIGHTIEST QORN Sly, brave and truculent, the Qornt Retief had thrown a turn of violet silk around Qorn's left wrist, bound it to the alien's neck. Another wisp of stuff floated from Qorn's shoulder. Retief, still holding Qorn in an awkward sprawl, wrapped it around one outflung leg, trussed ankle and thigh together. Qorn "Gentlemen, are any of you familiar with a race known as the Qornt?" Retief kicked it. Qorn's chin hit the floor Qorn got a leg under him seated himself in Qorn's vacated chair. "A couple of you finish trussing Qorn up for me." "Indeed, Mr. Magnan?" Nitworth smiled icily. "It appears the Qornt do His Supreme Excellency The Qorn, Regent of Qornt, Over-Lord of the thirtieth day. Then will the Qornt come with steel and fire. Receive, "What good would that do? Qornt are Qornt. It seems there's always one "When estivating time comes there'd be no burrows for us. Anyway, with 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 Qornt fleets are indetectible!" into Verpp—" warmongers like Qorn?" "Very likely. 'The milder the Verpp, the wilder the Qorn,' as the old "What do Qornt turn into?" Retief asked. "Hmmmm. That's a good question. So far, none have survived Qornthood." sit around roaring fires and drink and tell lies and then go dashing off to enjoy a brisk affray and some leisurely looting afterward. But "Oh, by no means. The fleet lifts in thirty days. After all, we're Qornt "Only a dead Qornt stays home when Attack day comes. And even if Qornt personally." couldn't locate the Qornt. We'll go back now and report—" "One might, at that. The Qornt have made their play, but I think it Magnan gulped audibly. The Qornt froze, head tilted, beak aimed darted to the left. The first Qornt pounced, grappled Magnan to its stopped, right fist cocked. The two Qornt lay groaning feebly. and faces like that!" The smaller of the two captive Qornt ran long, slender fingers over whistle escaped—"at being taken for a Qornt." "Aren't you a Qornt?" like Qornt." "Oh, not at all—except perhaps to a Terrestrial. The Qornt are "Not at all! A Verpp wouldn't think of fertilizing a Qornt." "Why, the Qornt are argumentive, boastful, lacking in appreciation "How many Qornt would you say there are at Tarroon?" "Fifteen or twenty Qornt." "You mean that there are only fifteen or twenty individual Qornt in Another whistle. "Not at all. I was referring to the local Qornt only. "And the Qornt are responsible for the ultimatum—unilaterally?" 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 "Yes, yes, of course. Qornt Hall lies here inside the village." high-pitched screeching. "Softly, now. We approach Qornt Hall. They "When will the feast be over?" Magnan called hoarsely. that these Qornt are allowed to embark on piratical ventures of this "Oh, the majority of the Qornt favor the move, I imagine." 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 on a shouted conversation with an equally noisy fellow. "Ah, a moment," Zubb said. "Observe the Qornt—the tallest of the "Certainly. What other kind would the Qornt bother with?" They mount a variety of weapons. The Qornt are fond of that sort of thing. Each of the Qornt has his own, of course. They're virtually "And now an interview with the Qorn himself," Zubb shrilled. "If you'll anything that annoys the Qornt, it's Qornt-like behavior in others. Now forward, gibbered, waving his arms excitedly. Qorn pushed back his Qorn looked Retief over in silence, then belched. "Stay back!" Qorn hooted. "Stand over there where I can keep an eye on "Not here, you're not!" Qorn trumpeted. "Want peace, do you? Well, I "I guess so," grunted a giant Qornt in iridescent blue with Qorn's eyes bulged. He half rose. "We've been all over this," he "Oh, sure, Qorn." Qorn rumbled and resumed his seat. "All for one and one for all, that's "And you're the one, eh, Qorn?" Retief commented. "Silence!" Qorn hooted. "No use your talking to my loyal lieutenants "I can lick any Qornt in the house." Qorn said. "That's why I'm Qorn." "Now," Qorn said, lolling back in his chair, glass in hand. "There's a "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." "Oh, I doubt that," the blue-and-flame Qornt said. "Why should they?" Qorn rolled an eye at Retief and another at Magnan. "Take these two," assure you, it's useless. We Qornt "What?" Qorn trumpeted. Behind Retief, Magnan spluttered. Qornt Hall—uninvited, at that—and in chains—" Qorn slammed his fist down on the table. "I don't care what they are!" he honked. "Evacuate, hell! I can field eighty-five combat-ready ships!" "We'll take you on!" Qorn French-horned. "We're the Qorn! We glory in "Hogwash," the flame-and-blue Qorn cut in. "If it wasn't for you, Qorn, "Qorn, you seem to be the fire-brand here," Retief said. "I think the Retief watched as Qorn's aides helped him out of his formal trappings. doubt if old Qorn would weigh up at more than two-fifty standard pounds arms. Qorn stalked forward, long lean legs bent, long horny feet Qorn struck suddenly, a long arm flashing down in a vicious cut at Retief, who leaned aside, caught one lean shank below the knee. Qorn Qorn hissed and charged. Retief whirled aside, then struck the alien's off-leg in a flying tackle. Qorn leaned, arms windmilling, crashed to the narrow back, seized Qorn's neck in a stranglehold and threw his weight backward. Qorn fell on his back, his legs squatted out at an

<question>:
What happens to the qornt at estivating time?

<options>:
A It is unknown
B They die
C Nothing
D They moult

<answer>:

A