Simplify the Rational Expression $$\frac { x ^ { 2 } - 16 } { 4 - x }$$

Multiple Choice

Simplify the rational expression. If the rational expression cannot be simplified, so state.
- $$\frac { x ^ { 2 } - 16 } { 4 - x }$$

A) $- x + 4$
B) $x - 4$
C) $- x - 4$
D) cannot be simplified