$\begin {array} {1 1} (1)\;\text{Methyl amine} & \quad (11)\;\text{Phogene} \\ (111)\;\text{phospene} & \quad (1v)\;\text{Dimethylamine} \end {array}$

$\begin {array} {1 1} (A)\;(1) \: and \: (111) & \quad (B)\;(111) \: and \: (1v) \\ (C)\;(1) \: and (11) & \quad (D)\;(11) \: and \: (1v) \end {array}$