The equation of the parabola whose verte...

The equation of the parabola whose vertex is at(2, -1) and focus at(2, -3), is

A

1) `x ^(2) + 4x -8y -12 =0`

B

2) `x ^(2) -4x + 8y + 12 =0`

C

3) `x ^(2) + 8y =12`

D

4) `x ^(2) -4x + 12 =0`

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The correct Answer is:

B

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