Sum of 1/(sqrt(2)+sqrt(5))+1/(sqrt(5)+sq...

Sum of `1/(sqrt(2)+sqrt(5))+1/(sqrt(5)+sqrt(8))+1/(sqrt(8)+sqrt(11))+1/(sqrt(11)+sqrt(14))+..to n` terms= (A) `n/(sqrt(3n+2)-sqrt(2))` (B) `1/3 (sqrt(2)-sqrt(3n+2)` (C) `n/(sqrt(3n+2)+sqrt(2))` (D) none of these

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