How Do Companies Conduct a Social Audit

How do companies conduct a social audit?

A) They submit their corporate social responsibility portfolios to third-party companies that rate and rank them against other companies.
B) They file reports to their stockholders and investors about proposed corporate social responsibility activities related to social work and environmental conservation.
C) They partner with charitable organizations that interact with the local community and employee relations on their behalf.
D) They conduct an internal systematic examination that measures and monitors the progress of the company in meeting its corporate social responsibility goals.