During the Murder Trial of Blake, the Prosecution Wishes to Present

During the murder trial of Blake, the prosecution wishes to present a gun that the state claims is the murder weapon. Which of the following is true?

A) Horatio Caine, the crime scene investigator, must testify about finding the gun at the scene and the chain of custody regarding the gun.
B) During discovery, the defense would have had an opportunity to examine the gun and pertinent reports such as the ballistics test.
C) The defense could seek to exclude the gun because it was seized during an illegal search.
D) Samantha, the potential juror who had herself been the victim of a crime involving a handgun, would likely be excluded on a challenge for cause.
E) All of the above.