Before the first prosecution witness is called to give evidence at a trial, the prosecuting officer may make an opening address, stating briefly for each charge in the charge sheet:
(a) the elements of the offence that must be proved before the accused person can be found guilty and convicted; and
(b) for each element -- the alleged facts on which the prosecuting officer will rely to support the charge; and
(c) the nature of the evidence that the prosecuting officer proposes to present to prove the alleged facts.