If an auditor is obtaining an understanding of an issuer$$s information and communication component of internal control, which of the following factors should the auditor assess?

The integrity and ethical values of top management.

The philosophy and operating style of management to promote effective internal control over financial reporting.

The oversight responsibility over financial reporting and internal control by the board or audit committee.

The classes of transactions in the issuer$$s operations that are significant to the issuer$$s financial statements.