challenge: What is the purpose of the printed, numbered ticket handed to customers at Katz's Delicatessen?
  
  A. To keep track of the customer's order for accuracy
  B. To redeem for a complimentary dessert at the end of the meal
  C. To serve as a voucher for discounts on future visits
  D. To enter a raffle for a chance to win free food
  Answer: 