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The equation of common tangent to the cu...

The equation of common tangent to the curves `y^(2)=16x` and `xy=-4` is

A

`x - y +4 = 0`

B

`x +y +4 = 0`

C

`x - 2y +16 = 0`

D

`2x - y +2 = 0`

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The correct Answer is:
C
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