Section 2 Q16

16. xy^2 is a positive odd integer, which of the following must be true?

Ⅰ. xy is positive.

Ⅱ. xy is odd.

Ⅲ. x + y is even.

(A) Ⅰ only

(B) Ⅱ only

(C) Ⅲ only

(D) Ⅰ and Ⅱ

(E) Ⅱ and Ⅲ

Answer: E

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