If n and k are integers whose product is 900, which of the following statements must be true? Choose one
A) n+k>0 B) n does not equal k C) Either n or k is a multiple of 10 D) If n is even, then k is odd E) If n is odd, then k is even
If n is odd and k is odd, then the product is odd.   The answer is If n is odd, then k is even.
<result>E</result>
If n and k are integers whose product is 900, which of the following statements must be true?