The expression pq+p is odd when the p and q are integers. Which of the following expressions must be even?	Select.
A) p B) q C) p + q D) pq - p E) p + q^2
pq+p is odd   p and q are integers   If p were even pq+p would be even despite any value of q.   q can't be odd, so q must be even.   Ans : q
<result>B</result>
The expression pq+p is odd when the p and q are integers. Which of the following expressions must be even?