If x and y are positive integers, then xy + x is
Select the correct option:
A) Always even	B) Always odd	C) Even whenever x is even	D) Even whenever x + y is odd	E) It cannot be determined from the information given
xy + x can be factorized as x(y + 1) by taking out x common.   Now, anything multiplied by even is always even.   Answer (Even whenever x is even).
<result>C</result>
If x and y are positive integers, then xy + x is