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Product $(A)$ $\&$ $(B)$ respectively in the above reaction are :-

• A
  $\begin{matrix}
     O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
     ||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
     Ph-C-NH-C{{H}_{3}},  \\
  \end{matrix}$  $\begin{matrix}
     O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
     ||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
     Ph-C-NH-C{{H}_{3}}  \\
  \end{matrix}$
• B
  $\begin{matrix}
     \,\,\,\,\,\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
     \,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
     C{{H}_{3}}-C-NH-Ph,  \\
  \end{matrix}$ $\,\begin{array}{*{20}{c}}
    {O\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
    {||\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
    {C{H_3} - C - NH - Ph} 
  \end{array}$
• ✓
  $\,\begin{array}{*{20}{c}}
    {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
    {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
    {Ph - C - NH - C{H_3}} 
  \end{array} ,$ $\begin{array}{*{20}{c}}
    {O\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
    {||\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
    {C{H_3} - C - NH - Ph} 
  \end{array}$
• D
  $\begin{array}{*{20}{c}}
    {O\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
    {||\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
    {C{H_3} - C - NH - Ph} 
  \end{array},$$\,\begin{array}{*{20}{c}}
    {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
    {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
    {Ph - C - NH - C{H_3}} 
  \end{array}$