Select the correct condensed structural formula for the given compounds:
  
 
Answer variants:
\(CH_2=CH-CH_3\)
\(CH_2=CH(CH_2)_6CH_3\)
\(CH_3-(CH_2)_3C\) \(\equiv CH\)
\(CH_2-CH_3\)
\(CH_3-(CH_2)_6C\) \(\equiv CH\)
\(CH_3-CH_2-CH_3\)
  
1. Propane -
 
2. 1-Nonyne -
 
3. Propene -