Find the Derivative of the Function at the Specified Point $f ( x ) = x ^ { 2 } + 7 x - 2$

Find the derivative of the function at the specified point.
- $f ( x ) = x ^ { 2 } + 7 x - 2$ at $x = 0$

A) 0
B) 9
C) 7
D) $- 2$