Choose the correct alternative. The par...

Choose the correct alternative.
The parametric equations of the circle `x^2 _y^2 +mx+my =0` are

A

`x=(-m)/2 +m/\sqrt{2} costheta`, `y=(-m)/2 +m/\sqrt{2} sin theta`

B

`x=(-m)/2 +m/\sqrt{2} costheta`, `y=m/2 +m/\sqrt{2} sin theta`

C

x=0, y=0

D

`x=m cos theta , y=m sin theta`

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The correct Answer is:

A

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