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题目材料：
Tea is rich in compounds called polythenols, which are similar to certain compounds known to help prevent cancer. Among people in Japan, those who drink over ten cups of tea per day have lower rates of stomach cancer than others. On average, people in Japan drink much more tea than people in the United States and have lower rates of lung cancer. It is therefore likely that polyphenols also help prevent cancer.
Which of the following, if true, provides the most support for the argument?
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ASmoking, a known cause of lung cancer, is more common in Japan than it is in the United States.
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BFew people in the United States drink more than ten cups of tea per day.
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CStomach cancer is much more common in Japan than it is in the United States.
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DSoy products, which are known to help prevent cancer, are more widely used in Japan than in the United States.
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ECoffee, which like tea is a source of caffeine, is more popular in the United States than in Japan.
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