Question
The following compound can exhibits

Answer

b
(b) Optical isomerism because chiral centre is present

$\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,H} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ 
  {{{(C{H_3})}_2} - C = CH - {C^*} - COOH} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} 
\end{array}$

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$\underset{I}{\mathop{C{{H}_{3}}-C{{H}_{2}}-N{{H}_{2}}}}\,$ 

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$\mathop {{{(C{H_3}C{H_2})}_3}N}\limits_{II} $

$(A)\xrightarrow[{\begin{array}{*{20}{c}}
  {(2){\kern 1pt} A{g_2}O/{H_2}O} \\ 
  {(3){\kern 1pt} \Delta } 
\end{array}}]{{(1){\kern 1pt} \,excess\,{\kern 1pt} C{H_3}I/{K_2}C{O_3}}}(B)$ $\xrightarrow[{(iii){\kern 1pt} \Delta }]{{\begin{array}{*{20}{c}}
  {(i){\kern 1pt} excess{\kern 1pt} C{H_3}I/{K_2}C{O_3}} \\ 
  {(ii){\kern 1pt} A{g_2}O} 
\end{array}}}$ $\begin{array}{*{20}{c}}
  {{H_2}C = CH - CH - CH = C{H_2}} \\ 
  {|{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} } \,\,\,\,\\ 
  {{\mkern 1mu} {\mkern 1mu} C{H_3}} 
\end{array}$

Identify $A$

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$IUPAC$ name of $C{H_3}CHO$ is