If a(n) = sum(r=0)^(n) (1)/(""^(n)C(r))...

If ` a_(n) = sum_(r=0)^(n) (1)/(""^(n)C_(r)) ` , find the
value of ` sum_(r=0)^(n) (r)/(""^(n)C_(r))`

A

`a/n`

B

`n/a`

C

`2a/n`

D

`2n/a`

Text Solution

Verified by Experts

The correct Answer is:

C

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