Consider the following sequence of reactions:
$C_6H_5NH_2$ $\xrightarrow{NaNO_2, 0-5^{\circ}C} 'A'$ $\xrightarrow{N,N-\text{Dimethylaniline}} 'B'$
The product $B$ is

  • A
    $4-$(Dimethylamino)phenylhydrazine
  • B
    $N,N$-Dimethyl$-4-$(phenylazo)aniline
  • C
    $1,2-$Diphenyl-$N$,$N$-dimethylhydrazine
  • D
    $4-$Amino-$N$,$N$-dimethyl$-1,2-$diphenylhydrazine

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