1. During the two hours of the morning rush from 8 a.m. to 10 a.m., 100 customers per hour arrive at the coffee shop. The coffee shop has a capacity of 80 customers per hour. What is the number of customers waiting at 10 a.m.?
A. 100
B. 80
C. 40
D. 20
2. Which of the following statements about queues is FALSE when demand exceeds supply?
A. The queue grows as long as the demand rate exceeds capacity and customers are willing to wait.
B. If demand exceeds capacity for a longer period of time, the queue grows longer.
C. The queue will shrink if customers walk away instead of waiting patiently in line.
D. The queue grows as long as the supply rate exceeds capacity.