Price discrimination requires the ability to sort customers and the ability to prevent arbitrage. Explain how the following can function as price discrimination schemes and discuss both sorting and arbitrage: a. Requiring airline travelers to spend at least one Saturday night away from home to qualify for a low fare. Customers are sorted based on ▼ preferences geography demographic information sensitivity to price . Arbitrage is prevented by requiring an ID requiring an ID the product being non transferable resales not being profitable limiting the number a person can buy .