What is the equation of a circle with center (-3,-5) and radius 4?
A. (x+3)2 + (y + 5)2 = 4
B. (x-3)2 + (y- 5)2 = 4
C. (x-3)2 + (y-5)2 = 16
D. (x+3)2 + (y + 5)2 = 16