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The equation of the common tangent to y^...

The equation of the common tangent to `y^(2)=2 x` and `x^(2)=16 y` is

A

`x+2 y+2=0`

B

`x-2 y+2=0`

C

`x+2 y-2=0`

D

`x-2 y-2=0`

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The correct Answer is:
A
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