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Let f(x) =[x^2-2x]+abs(5x-7) , and let m...

Let `f(x) =[x^2-2x]+abs(5x-7)` , and let m be minimum value of `f(x) and M` be maximum value of `f(x)` in `[5/4,2]` then

A

`m=-1 , M=2`

B

`m=-1 , M=3`

C

`m=-1 , M=4`

D

`m=-2 , M=2`

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