Which of the following molecular formulas representing amines can exhibit metamerism?

Step-by-step solution

Metamerism arises due to the unequal distribution of alkyl groups on either side of a polyvalent functional group (such as -O-, -S-, -NH-, -CO-). For amines to show metamerism, they must be secondary or tertiary amines with enough carbon atoms to form at least two different structural arrangements. CH₅N can only form methylamine, a primary amine. C₂H₇N can form dimethylamine ( CH₃-NH-CH₃ ), a secondary amine, but only one arrangement is possible. C₃H₉N can form ethylmethylamine ( CH₃CH₂-NH-CH₃ ), but again, only on