Find the Center and Radius of the Circle by Completing $x^{2}+y^{2}-6 x+16 y+9=0$

Multiple Choice

Find the center and radius of the circle by completing the square.
- $x^{2}+y^{2}-6 x+16 y+9=0$

A) $(8,-3) ; r=64$
B) $(3,-8) ; r=8$
C) $(-3,8) ; r=64$
D) $(-8,3) ; r=8$