Which of the following reasons describe how the visual factory can be very helpful to employees in a lean system?

I. Makes data easy to understand

II. Focuses attention on improvement activities

III. Keeps everyone up-to-date

IV. Improves safety

V. Status of the system can be understood at a glance

Group of answer choices

a) I, II, and III only

b) I, III, and V only

c) II, III, and IV only

d) All of the above