In the Movie, from Hell, Sir William Gull Invites a Group

In the movie, From Hell, Sir William Gull invites a group of esteemed gentlemen to observe a new surgical procedure that destroys the frontal lobes of the brain and permanently calms agitated and violent patients. While they watch a physician tap a young woman's temples and forehead with a hammer, Gull exhorts the benefits of this procedure, which is called

A) tardive dyskinesia.
B) a lobotomy.
C) eclectic therapy.
D) an HMO.