A shipping container in the shape of a right rectangular prism has a length of 16 feet, a width of 8 feet, and a height of 4.5 feet. The container is completely filled with contents that weigh, on average, 0.50 pound per cubic foot. What is the weight, in pounds, of the contents in the container? A) 72 pounds B) 144 pounds C) 288 pounds D) 576 pounds