The standard auditors' report refers to standards of the PCAOB and GAAP in which paragraph?
A. Standards of the PCAOB: Introductory only; GAAP: Scope and opinion
B. Standards of the PCAOB: Introductory and scope; GAAP: Opinion only
C. Standards of the PCAOB: Scope only; GAAP: Opinion only
D. Standards of the PCAOB: Introductory only; GAAP: All paragraphs