Write the equation of a circle with a center at (15, - 35) and a diameter of 100.

(x - 15) 2 + (y + 35) 2 = 250

(x - 15) 2 + (y + 35) 2 = 50

(x - 15) 2 + (y + 35) 2 = 2500

(x - 15) 2 + (y + 35) 2 = 100

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