Note: Figure is not drawn to scale.

If a = 12 in, b = 12 in, c = 20 in, and d = 32 in, and the bases of the figure are the shaded regions, what is the lateral surface area of the geometric shape formed by this net?
A.
1,248 sq in
B.
768 sq in
C.
864 sq in
D.
624 sq in