which equation is the equation of a circle with a diameter of 10 cm and a center at (-3,6) ?

A. (x - 3)^2 + (y + 6)^2 = 100

B. (x + 3)^2 + (y - 6)^2 = 100

C. (x - 3)^2 + (y + 6)^2 = 25

D. (x + 3)^2 + (y - 6)^2 = 25