In the chemical reaction $CH_3CH_2NH_2+CHCl_3 +3KOH \to (A)+(B)+3H_2O$ the compounds (A) and (B) are respectively

Question

$\begin{array}{1 1} C_2H_5CN\;and\;3KCl \\ CH_3CH_2CONH_2\;and\;3KCl \\ R_2H_5NC\;and \;K_2CO_3 \\ C_2H_5NC\;and\;3KCl \end{array}$