Find the center-radius form of the equation of the circle:
1) Circle with center (9, -6), radius √1
A) (x + 6)² + (y + 6)² = 121
B) (x - 9)² + (y + 6)² = 121
C) (x + 9)² + (y - 6)² = 121
D) (x - 9)² + (y - 6)² = 1
2) Circle with center (0, 0), radius 5
A) x² + y² = 25
B) x² + y² = 4
C) x² + y² = 10
D) x² + y² = 25
3) Circle with center (-10, 0), radius √3
A) (x + 10)² + y² = 3
B) (x - 10)² + y² = 3
C) (x + 10)² + y² = 9
D) (x - 10)² + y² = 3