A person invested x dollars in a project with an annual simple interest of y%. z% of the profit related to one year had to be used for tax payment. How much was the tax he payed?
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A\frac{yz}{10000}
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B\frac{xy}{10000}
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C\frac{xyz}{10000}
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D\frac{xyz}{100}
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E\frac{xz}{100}
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正确答案: C