The figure below shows a polygon ABCDEFGH, consisting of rectangles and right triangles. When cut out and folded on the dotted lines, the polygon forms a triangular prism. Suppose that:
AH = EF = 8
and
GH = 14.
What is the volume of the prism?
Answer Choices
A. 112
B. 128
C. 192
D. 240
E. 288