Defendant is on trial for the murder of his father. Defendant's defense is that he shot his father accidentally. The prosecutor calls Witness, a police officer, to testify that on two occasions in the year prior to this incident, he had been called to Defendant's home because of complaints of loud arguments between Defendant and his father, and had found it necessary to stop Defendant from beating his father. The evidence is 
inadmissible, because it is improper character evidence.  inadmissible, because Witness lacks firsthand knowledge of who started the quarrels.  admissible to show that Defendant killed his father intentionally. admissible to show that Defendant is a violent person.