Write the standard form of the equation of the circle.Center (0, -9), r = 2
A. (x - 9)2 + y2 = 4
B. x2 + (y + 9)2 = 4
C. x2 + (y - 9)2 = 2
D. (x + 9)2 + y2 = 4
Answer: B
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