Bethany is building storage boxes. Each box will have a length of 6 feet, a width of 3 1/2 feet, and a height of 5 1/2 feet. A quart of paint covers 100 square feet. How many quarts of paint does Bethany need to buy in order to paint 5 boxes?
A. 4 quarts
B. 6 quarts
C. 7 quarts
D. 8 quarts