What Does Section 206 of Title II Prevent a Public-Accounting

What does Section 206 of Title II prevent a public-accounting firm from doing?

A) Auditing a client if the CEO, chief accountant, or chief financial officer of the client worked for the public accounting firm and participated in auditing if that client in the previous 12 months from the beginning of the audit.
B) Hiring the CEO, chief accountant, or chief financial officer if the client worked for the public accounting firm and participated in auditing of that client in the 12 months after the beginning of the audit.
C) Having direct telephonic or E-mail communications with the CEO, chief accountant, or chief financial officer if the client worked for the public accounting firm and participated in auditing of that client in the previous 12 months from the beginning of the audit.
D) Publishing their findings in the audit to the SEC for public inspection by other corporations.