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underset(n to oo)lim 1/n [ tan pi/(4n) +...

`underset(n to oo)lim 1/n [ tan pi/(4n) + tan (2pi)/(4n) + tan (3pi)/(4n) + …. + tan(npi)/(4n)]`=

A

`2/pi log2`

B

`pi/2 log 2`

C

`pi/2 log 1/2`

D

`pi/2 log "" 1/2`

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The correct Answer is:
A
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