Evaluate the Function for the Indicated Value, Then Simplify $f ( x ) = - 2 x - 2$

Multiple Choice

Evaluate the function for the indicated value, then simplify.
- $f ( x ) = - 2 x - 2$ ; find $f ( a - 1 )$ , then simplify as much as possible.

A) $a = 5$
B) $- 2 a$
C) $a$
D) $- 2 a - 3$