A control chart of one facility's three years of monthly complaints showed no special causes, an average of 22, common cause limits of 2 to 42, and a month-to-month variation of up to 24 one way or the other. Which of the following statements is true? Question 6Select one: a. Having someone deal with each complaint individually is a good strategy. b. The process is too chaotic to apply a disciplined improvement approach. c. Hiring more people to investigate complaints more thoroughly, especially those taking over 20 days to resolve, would be a good use of resources. d. Aggregating the last year's 250 or so complaints and doing a Pareto analysis might help focus some key problems, departments, or providers