(b) The supervisory committee of not less than three elected or appointed members shall make or cause to be made such supplementary audits, examinations and verifications of members' accounts as it deems necessary or as are required by the commissioner or by the credit union's board of directors, and submit reports of these supplementary audits to the credit union's board of directors.
(c) The workpapers of any audit, including any materials associated with an audit of the credit union's electronic data procedures, shall be made available to the commissioner or to the examiners of the department of banking upon request, and will be accorded confidentiality in conformity with section four, article two, chapter thirty-one-a of this code.