A few minutes before closing time, around 12:45 AM, suppose that a customer waiting to order at an In-N-Out Burger in Grants Pass, Oregon is the last (15th) in the queue. After waiting for about 20 minutes, the customer ultimately decided to leave, although they had not been served yet. In Queuing Theory terms, this act by the customer of joining the queue initially and then leaving it before being served is referred to as: Group of answer choices Frustrating Prioritizing Departing Jockeying Reneging Balking Faffing