You work for a landscape company that just got a contract to re-mulch a park. The area that needs mulching is 30 feet by 60 feet. They want a 3 inch layer of much on the area. The company has bags of mulch that cover 2 cubic yards . How many bags of mulch will they need?

A) 3 bags B) 9 bags C) 13 bags  D) 17 bags