D wrong, the role of legal due diligence is to help equity investment funds comprehensively evaluate the legitimacy of enterprise assets and business and potential legal risks. Functionally, legal due diligence is more oriented to risk discovery than value discovery.

A "guarantee" is wrong, B "function" is wrong, and C is correct. The contents of legal due diligence mainly include: first, confirm the legal establishment and effective existence of the target company; Second, check the authenticity, accuracy and completeness of the documents provided by the target company from the perspective of compliance; Third, fully understand the organizational structure, property rights and legal status of assets and business of the target company, and confirm the legal compliance of enterprise property rights, business qualifications and its holding structure; Fourth, find and analyze the legal problems and risks existing in the target company and propose solutions; Fifth, issue legal opinions as an important basis for preparing transaction documents.