Find $\frac { f ( x + h ) - f ( x ) } { h }$

Multiple Choice

Find $\frac { f ( x + h ) - f ( x ) } { h }$ for the given function.
- $$f ( x ) = 5 x ^ { 2 } - 6 x + 4$$

A) $10 x + 5 h - 6$
B) $- 2 x + 5 h + 2$
C) $10 x - 6$
D) $5 h ^ { 2 } + 10 x h - 6 h$