Simplify the Boolean expression:
$$F(w, x, y, z) = \sum(0, 1, 2, 4, 5, 6, 8, 9, 12, 13, 14)$$

A

$$w + x + y + z$$

B

$$y' + w' z' + xz'$$

C

$$y + w' z' + xz$$

D

$$x + z' w' y + x'$$