The bathtub at the pet groomer’s shop is in the shape of a rectangular prism. The base of the tub has an area of 1,064 square inches. The groomer fills the tub with water to a depth of 15 inches. What is the volume, in cubic inches, of the portion of the bathtub the groomer filled with water?

A. 1,079 cubic inches

B. 15,960 cubic inches

C.40,432 cubic inches

D. 6.6,480 cubic inches