When Nabisco offers to cover half the cost of all local advertising for supermarkets that sell Oreo Cookies to feature Oreos in their ads, the company is granting ________.

promotional allowances

functional discounts

cash discounts

quantity discounts

seasonal discounts

For a nail salon, the costs associated with the purchase of nail polish and other products like nail polish remover, sterilized equipment, laundry service for the towels, and the beverages given to customers, are all examples of likely _____

marginal

contribution

regular

fixed

variable