A local movie theater, Cinemax Theaters, is considering changing its ticketing system. In the current system, customers form separate lines for five ticket counters. The manager is contemplating implementing a single-line system with multiple servers, where customers wait in one line and proceed to the next available counter. If the average service time is 3 minutes per customer, and the average number of arrivals per hour is 80 customers, determine which system results in the lowest customer waiting time (the average time a customer spends waiting in the queue).