Evaluate the Polynomial Function $f ( x ) = x ^ { 2 } - 3 x$

Multiple Choice

Evaluate the polynomial function.
-If $f ( x ) = x ^ { 2 } - 3 x$ , find $f ( a + h )$ .

A) $a ^ { 2 } + a h + h ^ { 2 } - 3 a - 3 h$
B) $a ^ { 2 } + 2 a h + h ^ { 2 } - 3 a - 3 h$
C) $a ^ { 2 } + h ^ { 2 } - 3 a h$
D) $a ^ { 2 } + h ^ { 2 } - 3 a - 3 h$