Consider the following conversions : I. CH_(3) underset(CN)underset(|)("CHCHO") overset(H_(3) O^(+))(rarr) CH_(3) underset("COOH")underset(|)(CH_(3)"CHCHO") II. underset(OH)underset(|)(CH_(3)"CHCN")overset(H_(3)O^(+))(rarr) CH_(3) underset(OH) underset(|)("CHCOOH") III. overset(O)overset(||)(CH_(3)"CCN")overset(H_(3)O^(+))(rarr ) overset(O)overset(||)(CH_(3) "CCOOH") In which case(s), preference group of nomenclature changes ?

Consider the following conversions : I. CH_(3) underset(CN)underset(|

1.	Consider the following conversions : I. CH_(3) underset(CN)underset(\|)("CHCHO") overset(H_(3) O^(+))(rarr) CH_(3) underset("COOH")underset(\|)(CH_(3)"CHCHO") II. underset(OH)underset(\|)(CH_(3)"CHCN")overset(H_(3)O^(+))(rarr) CH_(3) underset(OH) underset(\|)("CHCOOH") III. overset(O)overset(\|\|)(CH_(3)"CCN")overset(H_(3)O^(+))(rarr ) overset(O)overset(\|\|)(CH_(3) "CCOOH") In which case(s), preference group of nomenclature changes ?
Answer» I I, II I, II, III I, III ANSWER :A