निम्नलिखित अभिक्रियाओं में से कौन एक रैसिमिक उत्पाद नहीं देगीं ?

1. A \(\begin{array}{*{20}{c}}
     {C{H_3}\,\,\,\,\,\,\,\,\,\,} \\ 
     {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
     {C{H_3} - C - CH = C{H_2}} \\ 
     {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
     {H\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
   \end{array}\xrightarrow{{HCl}}\)
2. B \(\begin{array}{*{20}{c}}
     {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
     {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
     {C{H_3} - C - C{H_2} - C{H_3}} 
   \end{array}\xrightarrow{{HCN}}\)
3. D \(\mathrm{CH}_{3}- \mathrm{CH}_{2} -\mathrm{CH}=\mathrm{CH}_{2} \stackrel{\mathrm{HBr}}{\longrightarrow}\)