During a three-hour period between 12:00 noon and 3:00 pm, a customer service call center that uses eight customer service representatives (CSRs) handled 408 calls from customers. This equated to a labor utilization rate of 85%. (4a) What was the service rate (i.e., the number of calls each CSR can handle) during this period? (4b) How many calls would the call center be able to handle during this 3-hour period