Answer: a. Option A
Step-by-step explanation:
The Public Company Accounting Oversight Board (PCAOB) was formed by the Sarbanes-Oxley Act in the aftermath of the disastrous accounting policies of companies like WorldCom and Enron in the early 2000s to protect investors from such happening again.
The PCAOB monitors companies to ensure that they are complying by the provisions of the Sarbanes-Oxley Act and do so by coming up with both attestation and independence standards that these companies are to adhere to.