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If f (x) = 3x -1, g (x) =x ^(2) + 1 th...

If ` f (x) = 3x -1, g (x) =x ^(2) + 1 ` then `f [g (x)]=`

A

1) `3x ^(2) + 2`

B

2) `9x ^(2) -6x +2`

C

3) `3x ^(2) -2`

D

4) `9x ^(2) + 6x-2`

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The correct Answer is:
A
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