What Was the Rationale for Deliberately Injecting Mentally Ill Patients

What was the rationale for deliberately injecting mentally ill patients with malaria?

A) The patients' immoral behaviors had to be punished with illness.
B) The high fever would divert patients' attention from the symptoms of mental disorders.
C) It was a desperate attempt to shock the afflicted individual's system back to normality.
D) The malaria would bring about a high fever that in some cases had been associated with a reduction in symptoms.