The coefficient of xn in the expansion of \(\frac{1}{{(1 - x)(3 - x)}}\) is
1
\(\frac{{{3^{n + 1}} - 1}}{{{{2.3}^{n + 1}}}}\)
2
\(\frac{{{3^{n + 1}} - 1}}{{{3^{n + 1}}}}\)
3
\(2\left( {\frac{{{3^{n + 1}} - 1}}{{{3^{n + 1}}}}} \right)\)
4
None of these