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If S(n)=(1)/(6) n(n+1)(n+2) is the sum ...

If `S_(n)=(1)/(6) n(n+1)(n+2)` is the sum to n terms of a series whose `n^(th)`term is `T_(n)`, then `lim _(n rarr oo) sum_(r=1)^(n) (1)/(T)` is

A

a.2

B

b.3

C

c.`(3)/(2)`

D

d.6

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A
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