Subject to rule 5.4, an affidavit that is to be made by a creditor may be made:
(a) if the creditor is a corporation--by a director, secretary, or other principal officer of the corporation, or by a person employed by the corporation who is authorised to make the affidavit on its behalf; or
(b) if the creditor is a company to which a liquidator, provisional liquidator, receiver, administrator or controller has been appointed--by that person; or
(c) in any other case--by the creditor or a person authorised by the creditor to make the affidavit on behalf of the creditor.