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Q.) (x-1) (y-2)-5 and (x-1)^2+(y+2)² =r² intersect at four points A, B, C, D and if centroid of AABC lies on line y=3x-4, then locus of D is
[A]y =3x
[B]x²+y²+3x+1-0
[C]3y=x+1
[D]y=3x+1