A Present-Day Example of a Poka-Yoke Would Be Which of the Following

Multiple Choice

A present-day example of a poka-yoke would be which of the following?

A) robots that build self-cleaning cat litter boxes at a faster rate than human workers could possibly perform the task
B) automatic-filling water purifiers that pass a visual inspection test
C) providing workers with a gauge to measure the accuracy of holes that were drilled in a washing machine part
D) coffee makers that provide three levels of grinding