$(1)\,\,(CH_3)_3C-Br$ $(2)\,\,(C_6H_5)_2CH-Br$
$(3)\,\,(C_6H_5)_2C(CH_3)Br$ $(4)\,\,(CH_3)_2CH-Br$
$(5)\,\,C_2H_5Br$
$\,\text{C}{{\text{H}}_{\text{3}}}\text{Br }\xrightarrow{\text{KCN}}A\xrightarrow{{{H}_{3}}O}B\xrightarrow{LiAl{{H}_{4}}}C$
$n - Pr = n -$ propyl
નીપજ ' $(A)$ શું હશે ?