If x is an odd negative integer and y is an even integer, which of the following statements must be true? I. (3x + 2y) is positive integer II. (xy)^2 is positive integer III. (y^2 - x) is even integer	Choose the correct choice from the following answers:  A) I only  B) III only  C) II only  D) I,III only  E) none of these
I. It is true if 3x &lt; 2y   II. It is always positive   III. It is not always true   Answer : II only
<result>C</result>
If x is an odd negative integer and y is an even integer, which of the following statements must be true? I. (3x + 2y) is positive integer II. (xy)^2 is positive integer III. (y^2 - x) is even integer