5. A carpenter is making plans to purchase materials for a gable roof. The roof will be installed on a 48′-long building. The spacing of the rafters will be 16″ OC. Both sides of the gable roof are the same size, and one side of the roof measures 16′ × 48′. How many squares of shingles will be needed to cover both sides of the roof?
A. 13
B. 14
C. 12
D. 16