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The value of the expression (1+(1)/(omeg...

The value of the expression `(1+(1)/(omega))+(1+(1)/(omega^(2)))+(2+(1)/(omega))(2+(1)/(omega^(2)))+(3+(1)/(omega))(3+(1)/(omega^(3)))+.....+(n+(1)/(omega))(n+(1)/(omega^(2)))` where `omega` is a non-zero complex cube root of unity is:

A

`(n(n^(2)+2))/(3)`

B

`(n(n^(2)-2))/(3)`

C

`(n(n^(2)+1))/(3)`

D

none of these

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The correct Answer is:
a
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