A meat processing factory performs tasks by a series of 4 operators. Below table lists for each of the four resource pools, the unit load and the number of resource units. Base on this information, compute the effective capacity of each of the resource pools. Which one is the bottleneck of the meat processing operation?
 

Resource pools Unit load, Ti (min/order) a resource unit (orders per minute) Effective capacity of Number of units in resource pool (ci) Effective capacity of res' pool (orders/min) (ci/Ti) Operator 1 15 555 5 Operator 2 8 3 Operator 3 10 2 Operator 4 6 3