Let f : R to R be defined by f (x) = 2 x...

Let `f : R to R` be defined by `f (x) = 2 x ^(2) - 5 and g : R to R` by `g (x) = (x )/( x ^(2) + 1 )` then gof is _______.

A

`( 2x ^(2) - 5 )/( 4x ^(4) + 20 x ^(2) + 26)`

B

`( 2x ^(2) - 5)/( 4x ^(4) - 20 x ^(2) + 26)`

C

`( 2x ^(2))/( x ^(4) + 2x ^(2) - 4)`

D

`( 2x ^(2))/( 4x ^(2) - 20 x ^(2) + 26)`

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