There are four resources in a medical billing process. The unit load (Tp) of each resource unit to process one flow unit (a medical bill) is given below: Mailroom Clerk 8 min. Data-entry clerk 17 min. Claim processor 17 min. Claim supervisor 9 min. There are 2 resource units in the mailroom clerk resource pool, 3 resource units in the data-entry clerk resource pool, 4 resource units in the claim processor resource pool, and 2 resource units in the claim supervisor resource pool. Where is the bottleneck