The condition that x^(n+1)-x^(n)+1 shall...

The condition that `x^(n+1)-x^(n)+1` shall be divisible by `x^(2)-x+1` is that

A

`n=6x+1`

B

`n=6k-1`

C

`n=3k+1`

D

`n=3k-1`

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The correct Answer is:

A

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