Point M moved on the circle
(x−4)2+(y−8)2=20 . Then it broke away from it and moving along a tangent to the circle cut the X-axis at point (−2,0) . The coordinates of the point on the circle at which the moving point broke away is
a. (542,536)
b. (−52,544)
c. (6,4)
d. (2,4)