(a) It shall be unlawful for any person to sell or distribute any tobacco product or tobacco substitute to an individual who has not attained the age of 21 years or to purchase any tobacco product or tobacco substitute on behalf of an individual under 21 years of age.
(b) A person engaged in the sale or distribution of tobacco products or tobacco substitutes shall have the right to demand proof of age from a prospective purchaser or recipient of such products.
(c) A person engaged in the sale or distribution of tobacco products or tobacco substitutes shall demand proof of age from a prospective purchaser or recipient of such products who is under 30 years of age.