The knowledge point examined in this question is the regulation of establishing independent directors in listed companies. According to the regulations, being an independent director should meet the following basic conditions: (1) Being qualified as a director of a listed company in accordance with laws, administrative regulations and other relevant provisions; (2) Having the independence required by these Guidelines; (3) Having basic knowledge of the operation of listed companies and being familiar with relevant laws, administrative regulations and rules; (4) Having at least 5 years of legal, economic or other work experience necessary for performing the duties of an independent director; (5) Other conditions stipulated in the articles of association. So, the correct answer is ABC.