Except as otherwise approved by the comptroller of the treasury, any authority created pursuant to this chapter has the power and shall cause to be made an annual audit of the accounts and records of the authority. The audit shall include all funds of the authority, whether held by the authority or pursuant to trust indentures. The comptroller of the treasury shall be responsible for ensuring that the audits are prepared in accordance with generally accepted governmental auditing standards and determining if the audits meet minimum audit standards which shall be prescribed by the comptroller of the treasury. No audit may be accepted as meeting the requirements of this section until such audit has been approved by the comptroller of the treasury. The audits may be prepared by certified public accountants, public accountants or by the comptroller of the treasury. In the event the authority shall fail or refuse to have the audit prepared, then the comptroller of the treasury may appoint a certified public accountant or public accountant or direct the department of audit to prepare the audit. The cost of such audit shall be paid by the authority. All such audits shall be completed as soon as practicable after the end of the authority's fiscal year. One (1) copy of the audit shall be furnished to each member of the board of directors, the chief executive officer or officers of the county or counties with respect to which the authority has organized and the comptroller of the treasury. Copies of each audit shall also be made available to the public.