Find the center (h, k) and radius r of the circle with the given equation. (x + 9)2 + (y - 10)2 = 121
A. (h, k) = (-9, 10); r = 121
B. (h, k) = (10, -9); r = 11
C. (h, k) = (-9, 10); r = 11
D. (h, k) = (10, -9); r = 121
Answer: C
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