Evaluate the Function at the Indicated Value $\frac { f ( x + h ) - f ( x ) } { h }$

Multiple Choice

Evaluate the function at the indicated value.
-Find $\frac { f ( x + h ) - f ( x ) } { h }$ when $f ( x ) = x ^ { 2 } + 7 x + 4$

A) 1
B) $2 x + h + 4$
C) $2 x + h + 7$
D) $\frac { 2 x ^ { 2 } + 2 x + 2 x h + h ^ { 2 } + h + 8 } { h }$