Allan Is on Trial for Murder and Entered a Plea

Allan is on trial for murder and entered a plea of Not Guilty By Reason of Insanity. The judge needs to decide if the following witnesses should be allowed to testify:
•Mike, Ian's neighbor, who claims he has seen Ian on at least six occasions standing alone on the balcony of his apartment yelling and ranting as if addressing a large audience but no one is there.
•Dr) Nora, a board certified psychiatrist who has reviewed the file but never examined Ian.
•Oswald, an emergency room employee, who treated Ian for numerous self-inflicted injuries the day before Ian killed the victim in this case. Oswald asked Ian about the injuries, and Ian told him, "The devil made me do it!" What will happen if the judge holds a voir dire hearing prior to deciding if Dr. Nora is qualified to testify?

A) Prosecution and defense will ask Dr. Nora questions so the judge can evaluate whether she is qualified to testify as an expert in this case.
B) Judge will read all of the reports she wrote for the prosecution and/or the defense to make sure she is not biased.
C) The judge will attempt to impeach Dr. Nora.
D) All of these will happen at the voir dire hearing.