Any person who knowingly sells or furnishes alcoholic liquor to a person who is less than 21 years of age, or who fails to make diligent inquiry as to whether the person is less than 21 years of age, shall be guilty of a misdemeanor.
Any person under 21 years of age who purchases or who knowingly transports or possesses alcoholic liquor in a motor vehicle shall be guilty of a misdemeanor.
Any person under 21 years of age who shall falsely represent himself to be 21 years of age or over, for the purpose of purchasing or obtaining alcoholic liquor, shall be guilty of a misdemeanor.