(1) The hearsay rule and the opinion rule do not apply to evidence of an admission.
(2) The hearsay rule and the opinion rule do not apply to evidence of a previous representation:
(a) that was made in relation to an admission at the time the admission was made, or shortly before or after that time; and
(b) to which it is reasonably necessary to refer in order to understand the admission.
Note: Specific exclusionary rules relating to admissions are as follows:
Example : D admits to W, his best friend, that he sexually assaulted V. In D's trial for the sexual assault, the prosecution may lead evidence from W:
(a) that D made the admission to W as proof of the truth of that admission; and
(b) that W formed the opinion that D was sane when he made the admission.