The true statement for the series \(\left( {\sum\limits_{{\rm{n = 1}}}^\infty {\frac{{{{\rm{x}}^{{\rm{n - 1}}}}}}{{{\rm{n}}\left( {{{\rm{3}}^{\rm{n}}}} \right)}}} } \right) \) is:
1
convergent if x > 3
2
convergent if x > 1
3
convergent if x > 0
4
convergent if x < 3