Question 9 (1 point) Four pharmacies in a given community will be dispensing vaccines over the next months. Pharmacies A1 and A2 are part of the same chain whereas B and C are both independently owned and operated. All four take customer registrations on their respective website. Customers registering with A1 or A2 will be added to a wait list that is common to both A1 and A2. They will obtain their vaccine at either A1 or A2 depending on the availability of eacch. Customers registering with B or C will be added to the wait list that is specific to their pharmacy. They must obtain their vaccine at the pharmacy where they registered. Appointments are scheduled based on the order in which customer registered on the wait list (with no other priority criteria). Assume the wait list has no maximum size and that customers can travel just as easily to any of the four locations. Also assume that customers can only register with one pharmacy, that the rates of customer registrations follow a Poisson distribution with the same averages across all four pharmacies, that each pharmacy vaccinates customers one at a time, and that the vaccination time follows an exponential distribution with the same averages across all pharmacies. Which of the following is true ? On average, the service rate will be slower at B or C than it will be at A1 or A2. On average, customers registering with A1 or A2 will experience a shorter wait time than with B or C. On average, customers registering with B or C will experience a shorter wait time than with A1 or A2. On average, the utilization of vaccination resources will be lower at B or C than it will be at A1 or A2