c
\(C{{H}_{3}}C{{H}_{2}}Br\,\underset{\Delta }{\mathop{\xrightarrow{\overset{Aq-}{\mathop{KOH}}\,}}}\,\underset{[A]}{\mathop{C{{H}_{3}}}}\,C{{H}_{2}}\,OH\underset{\Delta }{\mathop{\xrightarrow{KMn{{O}_{4}}/{{H}^{+}}}}}\,\,C{{H}_{3}}\,\underset{[B]}{\mathop{C}}\,OOH\underset{\Delta }{\mathop{\xrightarrow{N{{H}_{3}}}}}\,\)
\(\,C{{H}_{3}}\underset{[C]}{\mathop{C}}\,ON{{H}_{2}}\,\underset{alkaly}{\mathop{\xrightarrow{B{{r}_{2}}/alkaly}}}\,\,\underset{[D]}{\mathop{C{{H}_{3}}N{{H}_{2}}}}\,\)