A.  x2+y2+2x-2y+1=0

B.  2x2+2y2+12x-2y+1=0

C.  x2+y2+2x+12y-11=0

D.  3x2+3y2+20x-21y+1=0

1
Correct Answer :
x2+y2+2x-2y+1=0
Explanation :
No Explanation available for this question

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