Which equation represents a circle with a center at (-4, 9) and a diameter of 10 units?
O (x – 9)2 + (y + 4)2 = 25
O (x + 4)2 + (y – 9)2 = 25
O (x – 9)2 + (y + 4)2 = 100
O (x + 4)2 + (y – 9)2 = 100