A ray M is sent along the line (x -0)/2 = (y-2)/2 = (z - 1)/0 and is reflected by the plane x = 0 at point A. The reflected ray is again reflected by the plane x + 2y = 0 at point B. The initial ray and final reflected ray meets at point J. Then
(A) the co-ordinates of point B is (4, –2, 1)
(B) the co-ordinates of point J is (–3, –1, 1)
(C) the centroid of ΔABJ is (1/3, -1/3, 1)
(D) the co-ordinates of point J is (2, –1, 1)
