Where an inquiry is held under section 55, or an inspection is made under section 56, the Registrar may apportion the costs, or such part of the costs, as he may think fit, between the society, the members or creditor demanding an inquiry or inspection, and the officers or former officers and the members or past members of the society:
     Provided that--
         (a) no order of the apportionment of the costs shall be made under this section unless the society or the person liable to pay the costs thereunder has had a reasonable opportunity of being heard;
         (b) the Registrar shall state in writing under his own hand the grounds on which the costs are apportioned.