All of the following are true of Pareto diagrams except?

My opinion is that the right answer is:

D. It is sometimes referred to as the/ rule

thanks for invition ,,,,,,,,,, my choice is option A

My option is A...............

My right answer is option A, because other options are true of pareto diagram, histogram, pareto ranks order and it is referred to 80/20 rule

Option D appears correct because Pareto Diagram is also called as "Pareto Rule" not "the/rule".

I think option A is the right answer.