If the pair of lines given by a x^(2)+2 ...

If the pair of lines given by `a x^(2)+2 h x y+b y^(2)=0` `(h^(2)>a b)` forms an equilateral triangle with `A x+B y+C=0` then `(a+3 b)(3 a+b)=`

A

`h^2`

B

`2h^2`

C

`3h^2`

D

`4h^2`

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The correct Answer is:

D

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