A.  2x2+2y2-x-7y=0

B.  9x2+9y2-14x-30y+16=0

C.  9x2+9y2-52x+46y+105=0

D.  x2+y2+8x-2y+1=0

Correct Answer :
2x2+2y2-x-7y=0
Explanation :
No Explanation available for this question
"