If x and y are integers, and fff\(w=(x^{2})y+x+3y\)/fff, which of the following statements must be true?
Indicate all such statements.
A.If w is even, then x must be even.
B.If x is odd, then w must be odd.
C.If y is odd, then w must be odd.
D.If w is odd, then y must be odd.
我的答案：
