Simplify the Rational Expression $\frac { a ^ { 2 } - 25 } { 5 - a }$

Multiple Choice

Simplify the rational expression. $\frac { a ^ { 2 } - 25 } { 5 - a }$

A) 5 $-$ a
B) a $-$ 4
C) $-$ a $-$ 4
D) a + 5
E) $-$ a $-$ 5