Solve the Equation $x ^ { 2 } - 12 x - 45 = 0$

Multiple Choice

Solve the equation $x ^ { 2 } - 12 x - 45 = 0$ by completing the square.

A) $\quad x = - 3 , x = 6$
B) $\quad x = 3 , x = - 15$
C) $\quad x = 9 , x = 15$
D) $\quad x = - 3 , x = 15$
E) $\quad x = 6 , x = 3$