Task: Question Answering
Input (English): Question: If n and k are integers whose product is 2500, which of the following statements must be true?

 Option A: n+k>0

 Option B: n does not equal k

 Option C: Either n or k is a multiple of 10

 Option D: If n is even, then k is odd

 Option E: If n is odd, then k is even
Output (English): Option E