An antique dealer stores her trunks in a shed that is 80 square feet. There are two sizes of trunks, trunk A takes up 6 square feet of space and trunk B takes up 5 square feet of space. The shed can hold a maximum of 10 trunks. If x is the number of trunk A and y is the number of trunk B, which constraint below shows the total number of trunks that the shed can hold?