help asap pls! A fish tank is shaped like a rectangular prism.

The area of the base of the fish tank is 6 1/8 square feet.
The height of the fish tank is 3 1/2 feet.

What is the volume, in cubic feet, of the fish tank?

A. 18 1/16


B. 21 7/16


C. 75 1/32


D. 131 39/128