The first term of an infinite geometric series is 2 and its sum be denoted by S. If | S – 2 | < 1/10 then the true set of the range of common ratio of the series is
1. \(\left( {\frac{1}{{10}},\;\frac{1}{5}} \right)\)
2. \(\left( { - \frac{1}{2},\;\frac{1}{2}} \right)\) – {0}
3. \(\left( { - \frac{1}{{19}},\;\frac{1}{{20}}} \right)-{\rm{ }}\left\{ 0 \right\}\)
4. \(\left( { - \frac{1}{{19}},\;\frac{1}{{21}}} \right)-{\rm{ }}\left\{ 0 \right\}\)