Let f be differentiable for all x. if f(...

Let f be differentiable for all x. if `f(1)=-2 and f'(x) ge2` for `x in[1,6]`, then

A

`f(6)lt5`

B

`f(6)=5`

C

`f(6)ge8`

D

`f(6)lt8`

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The correct Answer is:

C

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