Which of the following descriptions could apply to the variable y in
the equation y=4+7+x?

A. The perimeter of a triangle with sides that are 4 cm, 7cm, and x cm.

B. The surface area of a rectangular prism with edges that are 4cm, 7cm, and x cm.

C. The volume of a triangular prism with a base of 11cm and height of x cm.

D. The area of a triangle with sides equal to 4cm, 7cm, and x cm.