Provide an Appropriate Response $C ( x ) = \frac { 900 } { x + 30 }$

Multiple Choice

Provide an appropriate response.
-If the average cost per unit C(x) to produce x units of plywood is given by $C ( x ) = \frac { 900 } { x + 30 }$ , what is the unit cost for 10 units? Round to the nearest cent.

A) $60.00
B) $3.00
C) $22.50
D) $90.00