Defendant is charged with murder. The evidence shows that she pointed a gun at Victim and pulled the trigger. The gun discharged, killing Victim. The gun belonged to Victim. Defendant testifies that Victim told her, and she believed, that the "gun" was a stage prop that could fire only blanks, and that she fired the gun as part of rehearsing a play with Victim at his house. If the jury believes Defendant's testimony and finds that her mistaken belief that the gun was a prop was reasonable, they should find her 
guilty of murder. guilty of manslaughter. guilty of either murder or manslaughter. not guilty of murder or manslaughter.