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

<passage>:
"Bring them in, please." It was a simple student exchange—but "What would you say to two thousand?" "Two thousand? Retief, you're not fooling?" contingent of Bogan students. They're traveling aboard the two CDT transports. I'm interested in the baggage that goes with the students. Has it arrived yet? Okay, I'll wait." "Listen, Jim," Retief said. "I want you to go over to the warehouse and "I see they're sending two thousand students to d'Land," Retief said, to the port, Hank. I think I'd like to see the students off personally." "Send the bucolic person in." "Sounds very pleasant," Retief said. "Where does the Libraries and places ready for the winter or remodeling the older ones. We spend a twenty-eight back?" beef and popcorn over a Riesling base." "It put us in a bad spot," Arapoulous went on. "We had to borrow money from a world called Croanie. Mortgaged our crops. Had to start exporting art work too. Plenty of buyers, but it's not the same when you're doing it for strangers." "Say, this business of alternating drinks is the real McCoy," Retief said. "What's the problem? Croanie about to foreclose?" "Well, the loan's due. The wine crop would put us in the clear. But we need harvest hands. Picking Bacchus grapes isn't a job you can grass growing between. The wine-carriers keep on the run, bringing wine toes though. Ever tried to hold onto a gal wearing nothing but a layer of grape juice?" "Never did," Retief said. "You say most of the children are born after "Forty-two, Terry years," Arapoulous said. "But this year it looks bad. We've got a bumper crop—and we're short-handed. If we don't get a big vintage, Croanie steps in. Lord knows what they'll do to the land. Then next vintage time, with them holding half our grape acreage—" "You hocked the vineyards?" "You're due at the Intergroup Council in five minutes," she said. "Then afterwards, there are the Bogan students to meet." As the council meeting broke up, Retief caught the eye of a colleague across the table. "Mr. Whaffle, you mentioned a shipment going to a place called Croanie. What are they getting?" Whaffle blinked. "You're the fellow who's filling in for Magnan, over blinked at it. "Bolo Model WV/1 tractors, to be specific. Why is MUDDLE interested in MEDDLE's activities?" "Forgive my curiosity, Mr. Whaffle. It's just that Croanie cropped up earlier today. It seems she holds a mortgage on some vineyards over on—" "What kind of university do they have on d'Land?" asked Retief. "We're sending them two thousand exchange students. It must be quite an "University? D'Land has one under-endowed technical college." "Will all the exchange students be studying at the Technical College?" "Two thousand students? Hah! Two trade agreement she entered into with Boge. Two thousand students cab to the port. The Bogan students had arrived early. Retief saw them lined up on the ramp waiting to go through customs. It would be half "Yeah. Bunch of babies. Kids. How they expect—Never mind. Have one on me." "I'll tell you what I am. I'm a cradle-robber. You know—" he turned "Heck, no," he said. "Say, uh, Mr. Karsh, are we gonna get to go to "We have quarters ready for the students," Retief said. "If you'd like to bring them around to the west side, I have a couple of copters laid "Thanks," said Karsh. "They'll stay here until take-off time. Can't "We've scheduled your re-embarkation for noon tomorrow. That's a long wait. MUDDLE's arranged theater tickets and a dinner." "Sorry," Karsh said. "As soon as the baggage gets here, we're off." He hiccupped again. "Can't travel without our baggage, y'know." "Suit yourself," Retief said. "Where's the baggage now?" "Coming in aboard a Croanie lighter." "Maybe you'd like to arrange for a meal for the students here." students?" "Do you know the name of the institution these Bogan students are bound "Why, the University at d'Land, of course." "Would that be the Technical College?" me with the question of two thousand young male students headed for a world with no classrooms for them ... a world in need of tractors. But the tractors are on their way to Croanie, a world under obligation to Boge. And Croanie holds a mortgage on the best grape acreage on Lovenbroy." "Well!" Miss Furkle snapped, small eyes glaring under unplucked brows. never mind. I'd like you to look up an item for me. How many tractors will Croanie be getting under the MEDDLE program?" "Why, that's entirely MEDDLE business," Miss Furkle said. "Mr. Magnan always—" "Sure," Retief said. "Shoot. How many tractors?" CROANIE (general)." He paused at a page headed Industry. Still reading, he opened the desk drawer, took out the two bottles of Bacchus wine and two glasses. He poured an inch of wine into each and production of such vintages.... Half an hour later he laid the folder aside, keyed the phone and put through a call to the Croanie Legation. He asked for the Commercial Attache. "Retief here, Corps HQ," he said airily. "About the MEDDLE shipment, we're shipping five hundred units...." "It's perfectly in order. I thought it was all settled. Mr. Whaffle—" "One unit would require a good-sized plant to handle its output," Retief said. "Now Croanie subsists on her fisheries. She has perhaps half a dozen pint-sized processing plants. Maybe, in a bind, they hundred and ninety tractors?" "I know it's bad manners to ask questions. It's an old diplomatic tradition that any time you can get anybody to accept anything as a gift, you've scored points in the game. But if Croanie has some scheme cooking—" "Nothing like that, Retief. It's a mere business transaction." "The tractors are for transshipment. We've gotten ourselves into a "Who gets the tractors eventually?" "Who gets them?" "And when will they be shipped?" "Why, they went out a week ago. They'll be half way there by now. But applications that might come in from the Bogan Consulate for placement of students." Mr. Gulver of the Consulate brought it in." "I've just learned you're placing more students abroad, Mr. Gulver. How "Two thousand." "And where will they be going?" "Croanie. It's all in the application form I've handed in. Your job is to provide transportation." "Will there be any other students embarking this season?" two thousand to Featherweight." Miss Furkle compressed her lips. "If Mr. Magnan were here, I'm sure he wouldn't dream of interfering in the work of other departments. I ... overheard your conversation with the gentleman from the Croanie In the office, Arapoulous took a chair. "Sorry if I'm rushing you, Retief," he said. "But have you got anything for me?" Retief waved at the wine bottles. "What do you know about Croanie?" "Croanie? Not much of a place. Mostly ocean. All right if you like fish, I guess. We import our seafood from there. Nice prawns in monsoon time. Over a foot long."

<question>:
Where are the two thousand students being shipped to?

<options>:
A MUDDLE
B Earth
C Boge
D Croanie

<answer>:

D