$$(x + y), (x^2 - y^2), (x + y)^2, (x - y), (x^2 - y^2)^2, (x + y)^3, (x - y)^2, --------$$

A

$$(x - y)^3 (x + y)^2$$

B

$$(x^2 - y^2)$$

C

$$(x^2 - y^2)^3$$

D

$$(x^2 - y^2)^2$$