The RC and More Superstore Decides to Track Customer Complaints

Multiple Choice

The RC and More Superstore decides to track customer complaints as part of their ongoing customer satisfaction improvement program. After collecting data for two months, their check sheet appears as follows: If they construct a Pareto chart, what is the cumulative percentage of the two left most bars?

A) 20%
B) 28%
C) 54%
D) 68%
E) 80%