A bakery famous for its cupcakes opens its doors at 9 a.m. and allows each customer to purchase up to 2 cupcakes until the day's supply of cupcakes runs out. Customers begin lining up around 8 a.m. each day and the cupcakes usually run out around 9:30, leaving dozens of unserved customers disappointed. Which of the following statements about this market are true? Select all that apply.