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If one of the slopes of the pair of the ...

If one of the slopes of the pair of the lines `ax^(2) + 2 hxy + by^(2) = 0` is n times the other , then

A

`4ab = ( n+ 1)^(2) h`

B

`4 (n + 1)^(2) ab = nab`

C

`4h^(2) = (n +1)^(2) ab`

D

`4nh^(2) = (n + 1)^(2) ab`

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