Find the Center and Radius of the Circle with the Given

Multiple Choice

Find the center and radius of the circle with the given equation.
- $$x ^ { 2 } - 12 x + 36 + y ^ { 2 } - 8 y + 16 = 4$$

A) Center $( 6,4 ) , r = 2$
B) Center $( - 4 , - 6 ) , r = 4$
C) Center $( 4,6 ) , \mathrm { r } = 2$
D) Center $( - 6 , - 4 ) , \mathrm { r } = 4$