Pallets arrive to distribution center on every 20 seconds with a cv of 0.5. a single- pallet capacity forklift transports them to the narrow-aisle pallet rack storage area using single command cycle. there are 8 forklifts. average round-trip travel time is 2 minutes with cv of 0.25. average pick-up time is 0.1 minutes with cv of 0.1. the drop-off time and cv are the same. a narrow-aisle lift truck stores the pallets in the pallet rack. its average pick-up time is 0.1 with cv 0.2. its average store time is 0.2 with cv 0.1. its average round-trip cycle time is 1.5 minutes with cv 0.55. there are 6 narrow aisle lift trucks. a. what is the utilization of the forklifts? b. how many pallets on average wait for the forklifts? c. how long on average do pallets wait for the narrow-aisle lift trucks? d. which station is the bottleneck?