The sum of the series `2/3+8/9+(26)/(27)+(80)/(81)+` to `n` terms is `n-1/2(3^(-n)-1)` (b) `n-1/2(1-3^(-n))` (c) `n+1/2(3^n-1)` (d) `n-1/2(3^n-1)`

Options

A. `1-(1/3)^(n)`
B. `2-1/2(2/3)^(n)`
C. `n-n(1/3)^(n)`
D. None of these

Answer

D