If (2x + y) is one factor of 2ax - 2bx + ay - by, what is the other factor?

a) a - b
b) a - y
c) a + b
d) a + x

the answer i picked was a

Yes. Answer choice A is correct. If you simply take the one factor they gave you, which is 2x+y, and multiply by answer A, which a-b, you get 2ax-2bx+ay-by