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In which of the following reaction cyanide will be obtained as a major product ?
  • A$\begin{array}{*{20}{c}}
      O\,\, \\ 
      {||}\,\, \\ 
      {Ph - C - C{H_3}} 
    \end{array}$ $\xrightarrow[{(ii){H_3}{O^ + }}]{{(i)LiAl{H_4}}}$
  • B$\begin{array}{*{20}{c}}
      O\,\, \\ 
      {||} \,\,\\ 
      {Ph - C - N{H_2}} 
    \end{array}$ $\xrightarrow[{B{r_2}}]{{NaOH}}$
  • C$\begin{array}{*{20}{c}}
      O\,\, \\ 
      {||} \,\,\\ 
      {Ph - C - N{H_2}} 
    \end{array}$ $\xrightarrow{{{P_4}{O_{10}}}}$
  • D$\begin{array}{*{20}{c}}
      {O\,\,\,\,\,\,\,} \\ 
      {||\,\,\,\,\,\,\,\,} \\ 
      {Ph - C - O - H} 
    \end{array}$ $\xrightarrow{{SOC{l_2}}}\,\xrightarrow{{N{H_3}}}$
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