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Let f : R rarr R be defined by f(x) = 3x...

Let `f : R rarr R` be defined by `f(x) = 3x^2-5` and `g : R rarr R` by `g(x) = (x)/(x^2+1) xx` Then gof is

A

1)`(3x^2-5)/(9x^4-30x^2+26)`

B

2)`(3x^2-5)/(9x^4-6x^2+26)`

C

3)`(3x^2)/(x^4+2x^2-4)`

D

4)`(3x^2)/(9x^4+30x^2-2)`

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A
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