Nicholas is the project manager of the Lidon Project. Sample testing results indicates that product?

  defect density is too high in compare to the upper control limit set for nthe respective matrix as part of project planning . The organization has asked Nicholas to create a chart showing the distribution of defects density against time. Which of the following is the most appropriate tool for this activity 

A.  Pareto diagram 

B.  effect of different shifts on Productivity 

C.  defect log 

D.  Control chart