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Let arg(z(k))=((2k+1)pi)/(n) where k=1,2...

Let `arg(z_(k))=((2k+1)pi)/(n)` where `k=1,2,………n`. If `arg(z_(1),z_(2),z_(3),………….z_(n))=pi`, then `n` must be of form `(m in z)`

A

4m

B

`2m-1`

C

2m

D

None of these

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The correct Answer is:
B
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