Rationalize the Denominator $$\frac { 4 } { \sqrt { x + h } - \sqrt { x } }$$

Multiple Choice

Rationalize the denominator. Assume that all variables represent nonnegative numbers and that the denominator is not
zero.
- $$\frac { 4 } { \sqrt { x + h } - \sqrt { x } }$$

A) $\frac { 4 ( \sqrt { x + h } + \sqrt { x } ) } { h }$

B) $\frac { 4 \sqrt { h } } { h }$

C) $\frac { 4 ( \sqrt { x + h } - \sqrt { x } ) } { h }$

D) $\frac { 4 \sqrt { x + h } + \sqrt { x } } { h }$