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lf the 4 points made by intersection of lines `2x-y+1=0,x-2y+3=0` with the coordinate axes are concyclic then centre of circle is (A) `(7/4,5/4)` (B) `(7/4,(-5)/4)` (C) `((-7)/4,5/4)` (D) `((-7)/4,(-5)/4)`

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