The Reasons for the Hearsay Rule in the First Instance

The reasons for the hearsay rule in the first instance are based on:

A) the fact that the declarant was not under oath to speak the truth
B) the demeanor of the person who actually made the statement cannot be observed by the judge and jury.
C) there is danger that the statement may be repeated inaccurately.
D) all of the above answers collectively support the reasons for the hearsay rule.