Mr. Thompson needs to move two large boxes of toys from the store to his house. The first box measures 6 ft long × 4 ft tall × 5 ft wide. The second box is a cube with a side length of 4 ft. The back of his van can hold 200 cubic feet.
How much room is left over in the back of Mr. Thompson's van after he loads in the two boxes?

A) 12 cubic feet
B) 16 cubic feet
C) 64 cubic feet
D) 184 cubic feet