If \((x + y)^2 = 16\) and \(x^2 - y^2 = 16,\) what is the value of \(2x^2?\)

[Vincen]

If \((x + y)^2 = 16\) and \(x^2 - y^2 = 16,\) what is the value of \(2x^2?\)

(A) 8
(B) 16
(C) 18
(D) 32
(E) 50

Answer: D

Source: Manhattan GMAT