During Arraignment, a Defendant Behaves Bizarrely, Fails to Respond to the Judge's

During arraignment, a defendant behaves bizarrely, fails to respond to the judge's questions, and shouts obscenities. The judge orders an evaluation by a forensic nurse examiner. Which information provided by the examiner will be most important to the court at this time?

A) The defendant's mental state at the time of the crime
B) The defendant's competence to proceed with trial
C) The cause of the defendant's courtroom behaviour
D) The defendant's history and cognitive abilities