After the Market Failures as the New Century Began,further Regulations

After the market failures as the new century began,further regulations were developed to:

A) hold chief officers of a firm responsible for the accuracy of the financial statements.
B) provide for independent auditors and boards of directors.
C) restrict the accounting activities of audit firms in conflict of interest situations.
D) implement new accounting standards to handle the expensing of stock options,disclosure of off-balance-sheet financial exposures,and the treatment of derivative securities.