Suppose you have a three task sequence. All customers go to Task A. After task A, 25% of customers go to Task B; the other 75% go to task C. After task B or C, all customers then go to Task D before leaving. Lines/queues can form before any task, so blocking does not occur. Suppose throughput capacities are as follows. Task A: 10 customers/hour; task B: 5 customers/hour; task C: 6 customers/hour; task D, 9 customers/hour. At what rate will customers leave task D (in customers/hour)? 5 6 O 7.5 O 8.5 O 9 9.5 10 From the previous question, the utilization of Task B is closest to which of the following? O 10% O 25% O 33% O 50% O 67% O 75% O 100%