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Let `f` be differentiable for all `x ,` If `f(1)=-2a n df^(prime)(x)geq2` for all `x in [1,6],` then find the range of values of `f(6)dot`

A

`f(6)=5`

B

`f(6)lt5`

C

`f(6)lt5`

D

`f(6)gt8`

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The correct Answer is:
D
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