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A hyperbola with eccentricity e=2 has a ...

A hyperbola with eccentricity `e=2` has a focus at (0,0) and corresponding directrix `y-1=0`. The equation of the hyperbola is

A

`x^(2)-3 y^(2)+8 y-4=0`

B

`x^(2)+3 y^(2)+8 y-4=0`

C

`3 x^(2)-y^(2)+8 y-4=0`

D

none of these

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The correct Answer is:
A
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