Equation of Circles

Geometry Level 1

If $(-1, -3)$ and $(5, 1)$ are two endpoints of a diameter of a circle, what is the equation of the circle?

(x-1)^2+(y+1)^2=11

(x-2)^2+(y-1)^2=13

(x-2)^2+(y+1)^2=11

(x-2)^2+(y+1)^2=13