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

The interval in which x must lie so that the numerically
greatest term in the expansion of `(1 - x)^(21)` has the
numerically greatest coefficient, is

A

`[(5)/(6), (6)/(5)]`

B

`((5)/(6),(6)/(5))`

C

`((4)/(5),(5)/(4))`

D

`[(4)/(5), (5)/(4)]`

Verified by Experts

The correct Answer is:

B

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