According to the 80/20 rule, 80 percent of
题型：单项选择题
问题：
According to the 80/20 rule, 80 percent of the problems are because of 20 percent of the causes. To facilitate finding out which are the most probable defects, and to evaluate nonconformities, you do a rank ordering of the defects using ______ .
A．statistical sampling
B．control chart
C．Pareto diagrams
D．inspection