Which statement is NOT true?

A$.$ Most of the literature on profile monitoring deals with phase II analysis of linear profiles.

B$.$ Profiles occur when a critical$-$to$-$quality characteristic is functionally dependent on one or more explanatory or independent variables.

C$.$ Shewhart control charts and EWMA and CUSUM control charts have limited use among in the practice of assignable causes that result in changes in the process input.

D$.$ Control charts are used to monitor processes looking for assignable causes that result in changes in the process output.

E$.$ All statements are true.