Correct Answer - D
`underset("Acetic acid")(CH_(3)COOH)overset(NH_(3))rarr CH_(3)COONH_(4) underset(-H_(2)O)overset(Delta)rarr CH_(3)CONH_(2)`
The isomers of `CH_(3)CONH_(2)` are
(i) `NH_(2)CH_(2)CHO` (ii) `CH_(3) - CH = NOH`
(iii) `N - COOH - CH_(3)`