Which of the Following Is Correct About the PCAOB

Which of the following is correct about the PCAOB?

A) The PCAOB receives its authority from the SEC
B) Auditing standards issued by the PCAOB must be approved by the U.S.Congress
C) The PCAOB requires companies with stock listed on a U.S.stock exchange to have an integrated audit by an auditor registered with the PCAOB
D) All audit firms performing audits of public companies are registered with and agree to comply with the auditing procedures established by the PCAOB