ઉપરોક્ત પ્રકિયા માં નીપજ $(B)$ શું હશે ?
$I. \,CH_3 - H$
$II.\, CH_3CH_2-H$
$III.\, CH_2 = CH - CH_2-H$
$IV.\, C_6H_5$
$C{{H}_{3}}\,-\,\,\overset{\overset{C{{H}_{3}}}{\mathop{|}}\,}{\mathop{C}}\,H\,\,-\,\,C{{H}_{3}}(excess)\,\,+\,\,B{{r}_{2}}\,\xrightarrow{hv}$
$\,\,\,\,C{{H}_{3}}\,-\,\,\overset{\overset{C{{H}_{3}}}{\mathop{|}}\,}{\mathop{\underset{\underset{Br}{\mathop{|}}\,}{\mathop{C}}\,}}\,\,\,-\,\,C{{H}_{3}}\,+\,\,C{{H}_{3}}\,-\,\,CH\,\,-\,\,C{{H}_{2}}\,-\,\,Br$

$C{H_3}C \equiv CH\xrightarrow[{(ii)\,Dl}]{{(i)\,DCl\,\,(1\,equiv)}}$