23. The rules contemplated in sections 64.1 and 64.2 of the Savings and Credit Unions Act and in section 22 apply to every loan granted(a) to an officer, the spouse or children of an officer, of a member of the board of directors, of the committee on credit or of the board of supervision of the union;
(b) to a corporation in which one of the persons contemplated in paragraph a or a member of the board of directors, of the committee on credit or of the board of supervision holds directly or indirectly more than ten per cent of the voting shares of the share capital of such corporation;
(c) to a corporation in which more than fifty per cent of the share capital is held, directly or indirectly, by a group exclusively composed of persons contemplated in paragraph a or of the members of the board of directors, of the committee on credit or of the board of supervision of the union.