The equation of the parabola having focu...

The equation of the parabola having focus (1,2) and directrix `x+ 2y + 6 = 0` is

A

`4x^(2) + 4xy +y^(2) + 22x - 44y-11 =0`

B

`4x^(2) - 4xy + y^(2) - 22 x + 44y-11 = 0`

C

`4x^(2) + 4xy + y^(2) + 22 x +54y+11=0`

D

`4x^(2) - 4xy+y^(2)- 22x -44y -11 =0`

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The correct Answer is:

D

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