Three common types of attestation services are

A、audits of historical financial statements, reviews of historical financial statements, and audits of internal control over financial reporting.;

B、audits of historical financial information, verifications of historical financial information, and attestations regarding internal controls. ;

C、reviews of historical financial information, verifications of future financial information, and attestations regarding internal controls.;

D、audits of historical financial information, reviews of controls related to investments, and verifications of historical financial information.