If n is a positive integer and C(k)=""^(...

If n is a positive integer and `C_(k)=""^(n)C_(k)`, then the value of `sum_(k=1)^(n)k^(3)((C_(k))/(C_(k-1)))^(2)` is :

`(n(n+1)(n+2))/(12)`

`(n(n+1)^(2)(n+2))/(12)`

`(n(n+1)(n+2)^(2))/(12)`

none of these

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