While making a run or Shewhart chart is an important part of any QI initiative, the charts do not tell you $($select all that apply$)$:

A$.$

How the process should actually be improved or redesigned

B$.$

How much money will be saved as a result of the improvement work

C$.$

The number of teams required to achieve improvement

D$.$

The reason$($s$)$ for a special cause

E$.$

Whether or not a common cause process should be improved