What is major product of following reaction? $\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{{C_2}{H_5} - C - N{H_2}\xrightarrow[{B{r_2}}]{{KOH}}A\xrightarrow[{KOH}]{{CHC{l_3}}}}
\end{array}$ Major Product
- A$CH_3-CN$
- B$C_2H_5-NC$
- C$C_2H_5-CN$
- D$CH_3-NC$