If p and q are two different prime numbers, which of the following cannot be true?	Choose the correct choice.
A) pq is odd.
B) p + q is even.
C) p + q is odd.
D) pq is even.
E) p/q is an integer
A prime number is a positive integer with exactly two distinct positive divisors: 1 and itself. So, a prime number cannot be a multiple of another prime number. Which makes option E not possible (p/q=integer means that p is a multiple of q).   Answer: E.   All other options are possible:   A. pq is odd --&gt; p=3 and q=5;   B. p + q is even --&gt; p=3 and q=5;   C. p + q is odd --&gt; p=2 and q=3;   D. pq is even --&gt; p=2 and q=3;   p/q is an integer
<result>E</result>
If p and q are two different prime numbers, which of the following cannot be true?