નીચેની પ્રતિક્રિયાઓની શ્રેણી ધ્યાનમાં લો:
$C_6H_5NH_2$ $\xrightarrow{NaNO_2, 0-5^{\circ}C} 'A'$ $\xrightarrow{N,N-\text{Dimethylaniline}} 'B'$
નીપજ $B$ શું છે?

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