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The equation of a parabola which passes ...

The equation of a parabola which passes through the point of intersection of a straight line `x +y=0` and the circel `x ^(2) +y ^(2) +4y =0` is

A

`y^(2)=4x`

B

`y^(2)=x`

C

`y^(2)=2x`

D

none of these

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The correct Answer is:
c
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