Which of the Following Statements Are Not True?
A) Raising $\bar { x }$

Which of the following statements are not true?

A) Raising quality levels can lead to decreased costs, a greater degree of consumer satisfaction, and thus increased profitability.
B) Control Charting is now used extensively in industry as a diagnostic technique for monitoring production processes to identify instability and unusual circumstances.
C) The basis for most of control charts lies in our work concerning probability distributions of various statistics such as the sample mean $\bar { x }$
And sample proportion $\hat { p } = X / n$
D) All of the above statements are true.
E) None of the above statements are true.