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If the product of integers a, b, c, and d is an even integer, which of the following statements about a, b, c, and d must be true?
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A.None of the integers is zero.
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B.At least two of the integers are even integers.
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C.At least two of the integers are odd integers.
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D.None of the integers is an odd integer.
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E.Not all of the integers are odd integers.
E显示答案
