Find the Center and Radius of the Circle by Completing $x^{2}+y^{2}-18 x-8 y+72=0$

Multiple Choice

Find the center and radius of the circle by completing the square.
- $x^{2}+y^{2}-18 x-8 y+72=0$

A) $(-4,-9) ; r=25$
B) $(9,4) ; r=5$
C) $(-9,-4) ; r=25$
D) $(4,9) ; r=5$