Interpreting Data, SM-Bank 013 MC

The back-to-back ordered stem plot below shows the female and male smoking rates, expressed as a percentage, in 18 countries.
 

For these 18 countries, the smoking rates for females are generally

1. lower and less variable than the smoking rates for males.
2. lower and more variable than the smoking rates for males.
3. higher and less variable than the smoking rates for males.
4. higher and more variable than the smoking rates for males.