Rebates and Refunds Are a Form of Consumer Promotion Where

Rebates and refunds are a form of consumer promotion where:

A) customers are offered regular trial sizes of the product either free or at a nominal price.
B) additional amounts of the product are given to buyers when they purchase the product.
C) customers are offered discounts from the product's regular price.
D) customers are given reimbursements for purchasing the product either on the spot or through mail.