Which one of the following compounds gives blue colour
  • A$C_6H_5-NO_2$
  • B$CH_3-CH_2-NO_2$
  • C$\begin{array}{*{20}{c}}
      {\,\,\,NO} \\ 
      {|\,} \\ 
      {C{H_3} - C - N{O_2}} \\ 
      {|\,} \\ 
      {\,\,\,\,C{H_3}} 
    \end{array}$
  • D$\begin{array}{*{20}{c}}
      {C{H_3} - C - N{O_2}} \\ 
      {|\,} \\ 
      {\,\,\,\,\,NOH} 
    \end{array}$
Medium
art

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