Ugo Cerletti Delivered Electrical Shock to the Brains of Mental

Ugo Cerletti delivered electrical shock to the brains of mental patients because he believed that

A) such treatments curbed inappropriate behavior.
B) shock made the patients more manageable.
C) the occurrence of a brain seizure appeared to reduce symptoms in psychiatric patients.
D) large doses of insulin had been shown to normalize brain activity.
E) this restored normal electrical activity of the cortex of psychiatric patients.