Find the center and radius of the sphere.x2 + (y + 7)2 + (z - 1)2 = 64
A. C(0, 7, -1), a = 64
B. C(0, -7, 1), a = 64
C. C(0, 7, -1), a = 8
D. C(0, -7, 1), a = 8
Answer: D
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