DSAT Circle Equation EPIC SATnopsis Drops - (x-6)^2 + (y+5)^2=16

(x-6)^2 + (y+5)^2=16
In the xy-plane, the graph of the equation above is a circle. Point P is on the circle and has coordinates
(10, -5). If PQ is a diameter of the circle, what are the coordinates of point Q ?
(2, −5)
(6, −1)
(6, −5)
(6, −9)