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 `xin[1,6]`, then

A

f(6)=5

B

`f(6)lt5`

C

`f(6)lt8`

D

`f(6) ge 8`

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The correct Answer is:

D

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