Rank the following sets of substituents in order of Cahn-In-gold Prelog priorities:

(a) —CH3, —0H, —H, —C1

(b) —CH3, —CH2CH3, —CH = CH2, —CH2OH

(c) —CO2H, —CH2OH, —C = N, —CH2NH2

(d) —CH2CH3, —C = CH, —C = N, —CH2OCH3