Question

If a, b, and c are positive integers such that the value of a+b is even and the value of (a+b)^2+a+c is even, which of the following CANNOT be true?

(A) The value of a is odd
(B) The integer a is even and c is odd
(C) The integers a, b, and c, are all even
(D) The value of ab is odd
(E) The integers b and c are both odd

Answer 1

I got it. I think it's A