How is average lead time measured in a Kanban system?

How is average lead time measured in a Kanban system?
A . By taking the average velocity over the last three iterations
B . Measure the vertical distance between arrival and departure lines on a cumulative flow diagram
C . Measure the horizontal distance between arrival and departure lines on a cumulative flow diagram
D . Measure the lead time for at least three items and calculate the statistical mean of the items

Answer: C

Explanation:

In a Kanban system, average lead time is measured by observing the horizontal distance between the arrival and departure lines on a cumulative flow diagram (CFD). The CFD visualizes the flow of work

items through various stages of the workflow. The horizontal distance between the points where work items enter and leave a particular stage represents the lead time. By calculating this distance over multiple items, teams can determine the average lead time, providing insights into process efficiency and areas for potential improvement.