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If sum ( k = 1) ^(n) k ( k +1) ( k -1) =...

If `sum _( k = 1) ^(n) k ( k +1) ( k -1) = pn ^(4) + qn ^(3) + tn ^(2) + sn,` where p, q, t and s are constants, then the value of s is equal to

A

`-1/4`

B

`-1/2`

C

`1/2`

D

`1/4`

Text Solution

Verified by Experts

The correct Answer is:
B
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