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Evaluate: (lim)(nvecoo)n[1/(n a)+1/(n a+...

Evaluate: `(lim)_(nvecoo)n[1/(n a)+1/(n a+1)+1/(n a+2)++1/(n b)]`

A

`log(a/b)`

B

`log(b/a)`

C

`log(ab)`

D

None of these

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