Which equation represents a circle with a center at (–4, 9) and a diameter of 10 units?

a. (x – 9)2 + (y + 4)2 = 25

b. (x + 4)2 + (y – 9)2 = 25

c. (x – 9)2 + (y + 4)2 = 100

d. (x + 4)2 + (y – 9)2 = 100

Which equation represents a circle with a center at (–4, 9) and a diameter of 10 units?

a. (x – 9)2 + (y + 4)2 = 25

b. (x + 4)2 + (y – 9)2 = 25

c. (x – 9)2 + (y + 4)2 = 100

d. (x + 4)2 + (y – 9)2 = 100