How is a proceeding for violation of the regulations in Circular 230 instituted against a tax practitioner

Incomplete question. The options read;

A. An aggrieved taxpayer files a petition with the United States Tax Court stating a claim against the attorney, certified public accountant, registered tax return preparer, enrolled agent, enrolled retirement plan agent, or enrolled actuary

B. The IRS representative signs a complaint naming the tax practitioner and files the complaint with the Administrative Law Judge (ALJ)

C. The Secretary of the Treasury files a complaint against the attorney, certified public accountant, registered tax return preparer, enrolled agent, enrolled retirement plan agent, or enrolled actuary in the United States District Court for the District of Columbia

D. The Commissioner of the IRS files a complaint against the attorney, certified public accountant, registered tax return preparer, enrolled agent, enrolled retirement plan agent, or enrolled actuary with the United States Tax Court

D. The Commissioner of the IRS files a complaint against the attorney, certified public accountant, registered tax return preparer, enrolled agent, enrolled retirement plan agent, or enrolled actuary with the United States Tax Court

Explanation:

According to the information on the thetaxadviser website, when there is a  violation of the regulations in Circular 230 instituted by a tax practitioner a complaint would be filed, and if found guilty, he or she "may be censured, suspended, or disbarred from practice before the IRS."

Usually, the Office of Professional Responsibility would take up the case against the tax practitioner.