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If from Lagrange's Mean value theorem we...

If from Lagrange's Mean value theorem we have, `f(4) - f(1) = (4 -1)` then find the range of c

A

`1 le c le 4`

B

`1 le c lt 4`

C

`1 lt c le 4`

D

`1 lt c lt 4`.

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