Choice "B" is correct. The auditor's consideration of materiality is a matter of professional judgment and is influenced by the auditor's perception of the needs of a reasonable person who will rely on the financial statements. Materiality assessments are not typically discussed with those charged with governance.
Choice "d" is incorrect. The auditor should communicate with those charged with governance about the appropriateness of significant accounting policies, such as the methods used to account for significant unusual transactions.
Choice "a" is incorrect. The auditor should inform those charged with governance of illegal acts that come to the auditor's attention during the course of the audit. Fraud involving senior management should also be reported directly to those charged with governance.
Choice "c" is incorrect. The auditor should discuss with those charged with governance any disagreements with management, whether or not they were satisfactorily resolved, about matters that individually or in the aggregate could be significant to the entity's financial statements or the auditor's report.