If x and y are unique prime integers, which of the following must be odd?
Choose the correct choice from the following answers:	A) xy^2	B) 2x+2y	C) 2x−2y	D) 2x/2y	E) x−y
Any number multiplied by 2 has to be an even number hence   Answer x−y
<result>E</result>
If x and y are unique prime integers, which of the following must be odd?