(4)
The Comptroller General of the United States—
(A)
may review any audit of a financial statement conducted under this subsection by an Inspector General or an external auditor;
(B)
shall report to the Congress, the Director of the Office of Management and Budget, and the head of the Government corporation which prepared the statement, regarding the results of the review and make any recommendation the Comptroller General of the United States considers appropriate; and
(C)
may audit a financial statement of a Government corporation at the discretion of the Comptroller General or at the request of a committee of the Congress.
An audit the Comptroller General performs under this paragraph shall be in lieu of the audit otherwise required by paragraph (1) of this subsection. Prior to performing such audit, the Comptroller General shall consult with the Inspector General of the agency which prepared the statement.