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

<passage>:
One can't be too cautious about the people one meets in Tangier. They're all weirdies of one kind or another. Me? Oh, The Place de France is the town's hub. It marks the end of Boulevard Pasteur, the main drag of the westernized part of the city, and the beginning of the medina. In a three-minute walk from the Place de France you can go from an ultra-modern, California-like resort to the Baghdad of Harun al-Rashid. It's quite a town, Tangier. King-size sidewalk cafes occupy three of the strategic corners on the Place de France. The Cafe de Paris serves the best draft beer in town, gets all the better custom, and has three establishment. You can sit of a sunny morning and read the Paris edition of the New York Herald Tribune while getting your shoes done up like mirrors for thirty Moroccan francs which comes to about five cents at current exchange. You can sit there, after the paper's read, sip your expresso and watch the people go by. Tangier is possibly the most cosmopolitan city in the world. In native costume you'll see Berber and Rif, Arab and Blue European dress you'll see Japs and Chinese, Hindus and Turks, Levantines and Filipinos, North Americans and South Americans, and, of course, even Europeans—from both sides of the Curtain. In Tangier you'll find some of the world's poorest and some of the richest. The poorest will try to sell you anything from a shoeshine to their not very lily-white bodies, and the richest will avoid your eyes, afraid you might try to sell them something. In spite of recent changes, the town still has its unique qualities. As a result of them the permanent population includes smugglers and black-marketeers, fugitives from justice and international con men, espionage homosexuals, nymphomaniacs, alcoholics, limits the activities of few of these. Like I said, it's quite a town. I looked up from my Herald Anything new cooking?" at the Cafe de Paris. It wasn't a place to go if you wanted to Rupert? Haven't seen you for Paul was an easy-going, sallow-faced was from Liverpool and in exports. "What's in the newspaper?" "Pogo and Albert are going to fight a duel," I told him, "and Lil Abner is becoming a rock'n'roll singer." He grunted. "Oh," I said, "the intellectual "They have, eh? How big?" "Several times bigger than anything we Americans have." saucers?" as though it'd been shaven. The girl was in the latest from "You know, what everybody "That's an idea," I said. without rubbing him the wrong well, but, for that matter, it's comparatively seldom you ever get to know anybody very well in Tangier. Largely, cards are played close to the chest. My beer came and a plate of tapas for us both. Tapas at the Cafe de Paris are apt to be potato salad, a few anchovies, olives, and possibly some cheese. Free lunch, they used to call it in the States. Just to say something, I said, "Where do you think they came Saucers." He grinned. "From Mars or Venus, or someplace." "Ummmm," I said. "Too bad landed on the Yale football field and said or something." crackpot blokes' explanations of It'd been cooked in rancid olive oil. I said, "Oh, there are various think of two or three that made sense." "Like what?" the club. Meanwhile, they send Paul grinned at me. "I see you read the same poxy stuff I do." in a neatly tailored gray jellaba, European style high-heeled shoes, and a pinkish silk after her. one. Suppose you have a very advanced civilization on, say, Mars." "Not Mars. No air, and too bloody dry to support life." "Don't interrupt, please," I said with mock severity. "This is a very old civilization and as the planet began to lose its water and air, it withdrew underground. Uses hydroponics and so forth, husbands its water and air. Isn't that what we'd do, in a few million years, if Earth lost its water and air?" "I suppose so," he said. "Anyway, what about them?" "Well, they observe how man is going through a scientific boom, an industrial boom, a population boom. A boom, period. Any day now he's going to have practical space ships. Meanwhile, he's also got the H-Bomb and not against using it, if he could different." I shifted my shoulders. "Well, "I got a better one. How's this. There's this alien life form that's way ahead of us. Their civilization is so old that they things like wars and depressions and revolutions, and greed for power or any of these things giving us a bad time here on Earth. They're all like scholars, pretty jolly well taken by Earth, especially the way we are right now, with all the problems, get don't know where we're going or how we're going to get there." my hands for Mouley. "How do you mean, where we're going ?" "Well, take half the countries in the world today. They're trying to industrialize, modernize, catch up with the advanced countries. Look at Egypt, and Israel, and India and China, and Yugoslavia and Brazil, and all the rest. Trying to drag themselves up to the level of the advanced countries, and all using different methods of doing it. But look at the so-called advanced countries. Up to their bottoms in problems. Juvenile delinquents, climbing crime and suicide rates, the loony-bins full of the balmy, unemployed, threat of war, spending all their money on armaments instead of things like it. Why, a man from Mars would be fascinated, like." Mouley came shuffling up in his babouche slippers and we of beer. know, there's only one big snag you always come up against this or whatever they are? Sooner You know, Scotland Yard, or the F.B.I., or Russia's secret police, or the French Sûreté, or Interpol. This world is so deep matter how much he'd been up, and they'd nab him." this possibility, it seemed to me that such an alien would base himself in London or New York. Somewhere where he could use the libraries for research, get the daily newspapers and center of things. But now I don't think so. I think he'd be right here in Tangier." "Why Tangier?" "It's the one town in the world where anything goes. Nobody gives a damn about you or your affairs. For instance, I've known you a year or more now, and I haven't the slightest idea of how you make your living." "That's right," Paul admitted. "In this town you seldom even can be British, a White Russian, could care less. Where are you from, Rupert?" "California," I told him. "No, you're not," he grinned. you mean?" the F.B.I. possibly flushing an alien. Telepathy is a sense not be considerably more difficult. Let's face it, in spite of in, neither of us is humanoid. Where are you really from, Rupert?" about you?" meat trusts. We're protein eaters. Humanoid flesh is considered quite a delicacy. How about you?" "Scouting the place for thrill tourists. My job is to go around to these backward cultures and help stir up inter-tribal, or international, conflicts—all according to how advanced they are. Then our tourists come in—well shielded, of course—and get their kicks watching it." Paul frowned. "That sort of practice could spoil an awful lot of good meat." THE END Transcriber's Note: This etext was produced from

<question>:
Why does Rupert like Tangier?

<options>:
A Tangier is full of criminals and subversives of various sorts.
B Tangier is right in the center of things.
C No one questions what he's doing in Tangier.
D The current exchange rate makes Tangier a cheap place to live.

<answer>:

C