(c) Notwithstanding subdivision (a), a business shall not sell or share the personal information of consumers if the business has actual knowledge that the consumer is less than 16 years of age, unless the consumer, In the case of consumers at least 13 years of age and less than 16 years of age, or the consumer's parent or guardian, In the case of consumers who are less than 13 years of age, has affirmatively authorized the sale or sharing of the consumer's personal information. A business that willfully disregards the consumer's age shall be deemed to have had actual knowledge of the consumer's age.