Bill, Who Was Forced to Swallow Chewing Tobacco as Punishment

Bill, who was forced to swallow chewing tobacco as punishment for chewing it in the boys' bathroom at high school, gets very angry thinking about the incident. He decides to confront the school's principal after a few days, and the discussion gets very heated. During the course of confrontation, Bill strikes the principal with his fist, resulting in the death of the principal. Bill is arrested and now stands trial for murder.

A) Bill's defense attorney calls the school psychiatrist, who testifies that Bill is clinically insane. The effect of this information is that: ​
B) Bill will be sentenced to a maximum of twenty years in prison.
C) Bill will not face the death penalty
D) Bill will immediately be released.
E) The judge will immediately declare a mistrial.