Question 8 (Mandatory) (4 points) The repair shop owners believe they are losing many customers needing routine repair because of the long wait. They decide to merge the two and use both garages for both types of services. As before, customers arrive at a rate of 5 per hour and are processed at that rate. Cars are served on a first come first serve basis. After the change it takes on average 1.4 hours to complete a repair. There are now 8 cars waiting on average for repairs. How long do customers spend (total time) on average in the (merged) shop after the re-design? a) 2 hours b) 2.4 hours c) 3 hours d) 2 hours e) 4.4 hours