A banner printing company charges $C(a)=6a+35$ dollars to print a banner with an area of $a$ square feet. Taylor wants to print a banner that is $4$ feet high. If her banner is $x$ feet long, the area of her banner is given by $A(x)=4x$.

a) Evaluate $C(A(8))$ and choose the most appropriate interpretation in the context of the problem.
$C(A(8))=$

A. It gives the price the company charges for a banner that is 8 feet long.

B. It gives the area of a banner which costs 8 dollars.

C. It gives the price the company charges for a banner with area 8 square feet.

D. It gives the area of a banner which is 8 feet long.

E. It gives the price the company charges for a banner with area 32 square feet, which is 8 feet long.

b) What are the units of the inputs and the outputs of the function $C(A(x))$?
Input units: ? feet (length) dollars (cost) square feet (area)
Output units: ? feet (length) dollars (cost) square feet (area)

Hint: