Management has decided to carry out a Pareto analysis focusing on problem areas. Which of the following conclusions does the Pareto analysis support?

A$.$ Management should focus attention on either the early morning or late afternoon time periods.

B$.$ Management should focus attention on "inability to meet heat specs" and "scratched lens."

C$.$ The Pareto analysis should not be used since it is inappropriate in this situation.

D$.$ We are receiving faulty lenses from our suppliers.