It is an acid
Vinegars Molecular formula is CH₃COOH
A. Alcohol Molecular Formula is C₂H₆O
B Amine is Ammonia which is NH₃
C Carboxylic Acid is Anything combined with O and H IN POLYATOMIC IONS WITH ACID AND BASES OH⁻
D Methyl CH₃
This being said.. It's an example of Methyl and Carboxylic acid