If n and k are integers whose product is 4900, which of the following statements must be true?  Answers.
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 4900, which of the following statements must be true?