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If 1,alpha1,alpha2,…..alpha(n-1) are the...

If `1,alpha_1,alpha_2,…..alpha_(n-1)` are the `n^(th)` roots of unity and n is an odd natural number then
`(1+alpha_1)(1+alpha_2)…..(1+alpha_(n-1))=`

A

1

B

`-1`

C

0

D

2

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The correct Answer is:
C
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