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Which of the following is an example of controlling variability in demand? O All the other answers are correct O A FASTPASS at a theme park O Discount movie tickets for movies in the afternoon O Happy hour at a bar How is it possible that queues occur even when the utilization is lower than 100%? O Long setup times can increase the utilization to above 100% at which point the system is no longer workable O Variability causes the system to sometimes sit idle (but this time cannot be stored) and be really busy at other times (leading to queues) O Because employees are lazy and wait for a queue to occur before they start working Larger batch sizes cause some units to be waiting while others are worked on