The sum of n terms of the following seri...

The sum of n terms of the following series `1+(1+x)+(1+x+x^2)+....` will be

A

`(1-x^n)/(1-x)`

B

`(x(1-x^n))/(1-x)`

C

`(n(1-x)-x(1-x^n))/((1-x)^2)`

D

None of these

Verified by Experts

The correct Answer is:

C

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