14) Delta is offering a promotion to customers to encourage them to buy both potato chips and a drink. It is offering customers a $4 discount on the purchase of a soda when they buy a bag of potato chips at the same time. The potato chips normally sell separately for $6 and the drink normally sells separately for $10. How should the revenue be allocated between the two items (soda and potato chips) when a customer, using the discount, buys both items for $12