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

<passage>:
CULTURAL EXCHANGE It was a simple student exchange—but Retief gave them more of observed. Retief thumbed through the papers, pausing to read from time an education than they expected! Extensive research did not uncover any evidence that unfortunate incidents." it." "I don't appreciate frivolity with reference to this Division," Magnan fancy I've made MUDDLE what it is today. Frankly, I question the weeks. But remember. Yours is purely a rubber-stamp function." to bear." be the first step toward sublimation of their aggressions into more cultivated channels." campaigns in the last two decades. They're known as the Hoodlums of the Nicodemean Cluster. Now, perhaps, we shall see them breaking that precedent and entering into the cultural life of the Galaxy." But I'm wondering what they'll study on d'Land. That's an industrial world of the poor but honest variety." "Academic details are the affair of the students and their professors," Magnan said. "Our function is merely to bring them together. See that you don't antagonize the Bogan representative. This will be an excellent opportunity for you to practice your diplomatic restraint—not your strong point, I'm sure you'll agree." of heavy cloth, a loose shirt open at the neck and a short jacket, "You work for this Culture bunch, do you? Funny. I thought they were What I wanted to see you about was—" He shifted in his chair. "Well, We like to farm, though. Spend a lot of time developing new forms. Arapoulous leaned forward. "We go in pretty heavy for the arts. Folks land area we've got into parks and farms. Course, we left some sizable "It sounds like it, Mr. Arapoulous. Just what—" painting and sculpture in the winter. Then Spring and it's the season for closer. Shines all the time. Ever seen it pouring rain in the sunshine? That's the music-writing season. Then summer. Summer's hot. We stay we're mostly islands. That's the drama and symphony time. the music and the surf and the bonfires and stars—we're close to the center of a globular cluster, you know...." "That's right. Autumn's our harvest season. Most years we have just the ordinary crops. Fruit, grain, that kind of thing getting it in doesn't take long. We spend most of the time on architecture, getting new places ready for the winter or remodeling the older ones. We spend a But this year...." "The crop isn't panning out?" twenty-eight I can't remember but two other harvests. The problem's not the crop." "Have you lost your markets? That sounds like a matter for the Commercial—" settled for anything else!" "This isn't to think of it, we also have to be careful about violating quaint native customs." and black." fresh glasses. "Here's to the harvest." We like to farm. About ten years back some neighbors of ours landed a force. They figured they knew better what to do with our minerals than we did. Wanted to strip-mine, smelt ore. We convinced 'em otherwise. But it took a year, and we lost a lot of men." "That's too bad," Retief said. "I'd say this one tastes more like roast beef and popcorn over a Riesling base." said. "What's the problem? Croanie about to foreclose?" here and there. Big vines, eight feet high, loaded with fruit, and deep to the pickers. There's prizes for the biggest day's output, bets on who can fill the most baskets in an hour.... The sun's high and bright, and it's just cool enough to give you plenty of energy. Come nightfall, the tables are set up in the garden plots, and the feast is laid on: roast turkeys, beef, hams, all kinds of fowl. Big salads. Plenty of fruit. Fresh-baked bread ... and wine, plenty of wine. The cooking's done by a different crew each night in each garden, and there's prizes for the best crews. for the young folks but anybody's welcome. That's when things start to "Never did," Retief said. "You say most of the children are born after "On the whole," Retief said, "I think I prefer the black. But the red is hard to beat...." "What we figured was, maybe you Culture boys could help us out. A loan to see us through the vintage, enough to hire extra hands. Then we'd "Can they pick grapes?" "Nope. Anyway, they can't stand the daylight. Have you talked this over Said it was what they classified as menial drudgery here. Cultural exhibits, you know." across the table. What are they getting?" Exchanges." He pursed his lips. "However, I suppose there's no harm in on—" General Economies have been trying for months to get a request for "That's the trouble with peaceful worlds," the SCROUNGE committeeman sending them two thousand exchange students. It must be quite an institution." "And nights to match." "Yeah. Bunch of babies. Kids. How they expect—Never mind. Have one on attention, his chest out. for?" details." said. "Personally, I'm curious as to just what it is these students are me with the question of two thousand young male students headed for always—" Library. In the stacks he thumbed through catalogues, pored over indices. vehicle. "Five hundred." CROANIE (general)." He paused at a page headed Industry. It would be a pity, he reflected, if anything should interfere with the we're shipping five hundred units...." "That's correct. Five hundred." "One unit would require a good-sized plant to handle its output," outfit? I should think—" "See here, Retief! Why all this interest in a few surplus tractors? And in any event, what business is it of yours how we plan to use the equipment? That's an internal affair of my government. Mr. Whaffle—" "I'm not Mr. Whaffle. What are you going to do with the other four "I understood the grant was to be with no strings attached!" "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." difficult situation, balance-of-payments-wise. This is an accommodation to a group with which we have rather strong business ties." "Who gets the tractors eventually?" "Who gets them?" "They happen to be going to Lovenbroy. But I scarcely see—" "Miss Furkle, I'd like to be notified immediately of any new "Well, it happens, by coincidence, that I have an application here now. shirt, shiny shoes with round toes and an ill-tempered expression. "What is it you wish?" he barked. "I understood in my discussions with the other ... ah ... civilian there'd be no further need for these irritating conferences." many this time?" "And where will they be going?" "Will there be any other students embarking this season?" "Another under-populated world—and in the same cluster, I believe," importance to see to." break-out of all the student movements that have been planned under the present program," he said. "And see if you can get a summary of what outside our interest cluster." "That's worse than listening in on phone conversations, eh? But never mind. I need the information, Miss Furkle." "Loyalty to my Chief—" "Loyalty to your pay-check should send you scuttling for the material "You on good terms with them?" "Sure, I guess so. Course, they're pretty thick with Boge." "So?" game."

<question>:
What is one common theme in this article?

<options>:
A Money buys happiness.
B Suspicion indicates deception.
C Education does not always lead to success.
D Wit and charm are the keys for negotiation.

<answer>:

B