Which of the Following Statements Is False

Which of the following statements is false?

A) Mentally ill patients who suffered from schizophrenia found relief with the new class of drugs called phenothiazines
B) Development of psychotherapies for psychological disorders suddenly slowed down at the beginning of the 20^th century
C) Phenothiazines were instrumental in the deinstitutionalization of patients who had been hospitalized for several years
D) Deinstitutionalization created significant problems for the managed care system during the mid 20^th century