In general, evidence of a person'According to Rule 404(a), character evidence of the accused is inadmissible, except when:
1) Evidence of a pertinent trait of character is offered by an accused
2) The prosecution offers evidence of a pertinent trait to rebut evidence of pertinent trait introduced by the accused
3) Both a and b
4) Neither a nor bs character or character trait is inadmissible to prove the person's current behavior.