Which equation has a center at (2, 1) and a point on the circle of (2, -3)?
O (x + 2)² + (y + 1)² = 16
O (x - 2)² + (y - 1)² = 4
O (x - 2)² + (y - 1)² = 16
O (x + 2)² + (y + 1)² = 4