Some question: A and B are integers. The expression (A+1)(B+1) is even. What can be said about A and B?\nOptions:\n(A) They are both even numbers.\n(B) At least one of them is even\n(C) At least one of them is odd.\n(D) They are both odd.\n(E) Nothing can be said surly on A and B
Some stream of consciousness:
User
Odd x Odd = Odd\nOdd x Even = Even\nEven x Even = Even\nTo fulfill condition Either (A+1) or (B+1) needs to be Even\nSo either A or B needs to be odd\nOr At Least one of them is odd. The answer: (C).
Assistant