If f(x) = kx^(3) -9x^(2) + 9x +3 is mono...

If `f(x) = kx^(3) -9x^(2) + 9x +3` is monotonically increasing in every interval, then which one of the following is correct?

A

`k lt 3`

B

`k le 3`

C

`k gt 3`

D

None of these

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The correct Answer is:

C

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