Q.
A. x2 + y2 - αx - βy = 0
B. x2 + y2 - 2αx - 2βy = 0
C. x2 + y2 + 2αx + 2βy = 0
D. x2 + y2 + αx + βy = 0
E. None of the above
Correct choice: B
Explanation: