An assembly line has 5 workstations: A, B, C, D and E which are arranged as a flowline. Each workstation performs one task. The processing time of each task (task 1, 2, 3,4, and 5) performed in the respective workstation (A, B, C, D and E) is 5min,3min,6min, 4min,2min, respectively. Tasks are performed sequentially as in the order of task 1, 2, 3, 4, and 5, in workstation, A, B, C, D, and E, respectively. 16. The working hours is 8 hours a day, 5 days a week, 50 weeks a year. The output rate is: a. 10 units/minute b. 15 units/hour c. 90 units/day d. 450 units/week e. 20,000 units/year