(a) The claim of a privilege is not a proper subject of comment by a party, a representative, or by a judge except as authorized in this section.

(b) No inference may be drawn from the use of a privilege.

(c) In jury cases, a person should be allowed to claim a privilege outside the hearing of the jury, if that is practical. If a party has claimed a privilege and fears that the jury might draw an inference against him because of it, he is entitled, upon request, to have the judge instruct the jury that they may not come to any conclusion because of his use of the privilege.