A furniture builder who has been commissioned to custom build some bookcases. He goes and measures the space but only had a meter stick with him. finds that the length is 2 meters, the height is 4 meters and the depth is 50 centimeters.

You are to build the shell of the bookcases. You can only buy lumber in 1 inch by 12 inches by 8 feet though. If each plank costs $18.00 how much will the materials cost the customer?
A) $144.00
B) $198.00
C) $702.00
D) $720.00