Find an Equation of the Circle with the Given Center $(-9,0)$

Multiple Choice

Find an equation of the circle with the given center and radius.
-Center $(-9,0)$ , radius 3

A) $(x+9) ^{2}+y^{2}=9$
B) $x^{2}+(y-9) ^{2}=3$
C) $(x-9) ^{2}+y^{2}=9$
D) $x^{2}+(y+9) ^{2}=3$