The interval in which x must lie so that...

The interval in which x must lie so that the
greatst term in the expansion of `(1 +x)^(2n)` has the greatest
coefficient,is

A

`((n-1)/(n), (n)/(n-1))`

B

`((n)/(n+1),(n+1)/(n))`

C

`((n)/(n+2), (n+2)/(n))`

D

None of these

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The correct Answer is:

B

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