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

Let `f: R rarr R ` be defined as f(X) = 3x. Then

A

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

B

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

C

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

D

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

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