Find the Derivative Of $f ( x ) = 2 x ^ { 2 } + 4 x + 9$

Multiple Choice

Find the derivative of $f ( x ) = 2 x ^ { 2 } + 4 x + 9$ .

A) $4 x + 13$
B) $2 x + 13$
C) $2 x + 4$
D) $4 x + 4$
E) $4 x$