If Sn=[1/(1+sqrt(n))+1/(2+sqrt(2n))+.......

If `S_n=[1/(1+sqrt(n))+1/(2+sqrt(2n))+....+1/(n+sqrt(n^2))]` then `(lim)_(n ->oo)S_n` is equal to (A) `log 2` (B) `log4` (C) `log8` (D) none of these

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