Which is an equation of a circle with center (2, -10) and radius 3?
A. (x - 2)^2 + (y + 10)^2 = 3
B. (x + 2)^2 + (y - 10)^2 = 3
C. (x - 2)^2 + (y + 10)^2 = 9
D. (x + 10)^2 + (y - 2)^2 = 9