An asembly-line process has five tasks as listed in the table below: Task time Task 1 10 min 5 min Task 2 Task 3 10 min Task 4 16 min Task 5 4 min Three workers (S1, S2, and S3) are staffed to this assembly line, and the assignment of tasks to each workers is: S1 does Task 1. S2 does Tasks 2 and 3. S3 does Tasks 4 and 5. For the following questions, we assume that process is operating at full capacity. (a) Which worker is the bottleneck of the process? What is the process capacity in [units/hour]? (1 point) (b) What is the idle time of each worker in [minutes)? (c) Assume a wage rate of $20 per hour. What is the direct labor cost in (S/unit]