In which of the following situations is Defendant most likely to be guilty of common law murder?
Angered because his neighbor is having a noisy party, Defendant fires a rifle into the neighbor's house. The bullet strikes and kills a guest at the party.  During an argument, Harry slaps Defendant. Angered, Defendant responds by shooting and killing Harry.  Defendant drives his car through a red light and strikes and kills a pedestrian who is crossing the street. Using his fist, Defendant punches Walter in the face. As a result of the blow, Walter falls and hits his head on a concrete curb, suffers a concussion, and dies