If the middle term in the expansion of (...

If the middle term in the expansion of `(1 + x)^(2n)` is `(1.3.5…(2n - 1))/(n!) k^(n).x^(n)`, the value of k is

A

`(3x)^(n+1) `

B

`(2x)^(n+1)`

C

`(2x)^n`

D

`(3x)^n`

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The correct Answer is:

C

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