Find the Center (H, K) and Radius R of the Circle

Multiple Choice

Find the center (h, k) and radius r of the circle with the given equation.
- $$x ^ { 2 } + ( y + 6 ) ^ { 2 } = 9$$

A) $( \mathrm { h } , \mathrm { k } ) = ( 0 , - 6 ) ; \mathrm { r } = 9$
B) $( \mathrm { h } , \mathrm { k } ) = ( - 6,0 ) ; \mathrm { r } = 9$
C) $( \mathrm { h } , \mathrm { k } ) = ( - 6,0 ) ; \mathrm { r } = 3$
D) $( \mathrm { h } , \mathrm { k } ) = ( 0 , - 6 ) ; \mathrm { r } = 3$