An ice-cream novelty item consists of a cup in the shape of a 4-inch-tall frustum of a right circular cone, with a 2-inch-diameter base at the bottom and a 4-inch-diameter base at the top, packed solid with ice cream, together with a solid cone of ice cream of height 4 inches, whose base, at the bottom, is the top base of the frustum. What is the total volume of the ice cream, in cubic inches?<spanclass=′latex−bold′>(A)</span>8π<spanclass=′latex−bold′>(B)</span>328π<spanclass=′latex−bold′>(C)</span>12π<spanclass=′latex−bold′>(D)</span>14π<spanclass=′latex−bold′>(E)</span>344π