Set X has \(x + 2b\) members, and set Y has \(y + 3b\) members. If they have exactly b members in common, how many elements are in the union of X and Y but not in the intersection of X and Y?
(A)\(x + y\) (B)\(x + y + 3b\) (C)\(x + y + 4b\) (D)\(x + y + 5b\) (E)\(x + y + 6b\)
B