Consider the following sequential production process with four machines A, B, C, and D (4 workers operate these machines respectively, one worker per machine).

Machine A Machine B Machine C Machine D Framer Handler Stringer Finisher 5 minutes 3 minutes 10 minutes 2 minutes

All flow units need to move through all the above stages sequentially, with the designated task time indicated above. What is the process capacity?

Group of answer choices

6 units per hour

4 units per hour

8 units per hour

3 units per hour