If integer a is divisible by both 3 and 14, which of the following must be true?...【小站备考】

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Question 7 Select one or more answer choices

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If integer a is divisible by both 3 and 14, which of the following must be true?Indicate all such statements.

A.a is divisible by 6

B.a is equal to 42

C.a is divisible by 21

D.a is positive

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