Which of the Following Is a Common Characteristic of Catechol

Multiple Choice

Which of the following is a common characteristic of catechol, hydroquinone, and resorcinol?

A) They all have two methyl groups as substituents on a benzene ring.
B) They all have two hydroxyl groups as substituents on a benzene ring.
C) They all have one methyl and one hydroxyl as substituents on a benzene ring.
D) They all have two methyl and one hydroxyl as substituents on a benzene ring.