EY, a large CPA firm, made several errors when auditing several large corporations. This led to several financial misstatements and restatements. In applying the ISO Corporate Social Responsibility (CSR) framework, the best action(s) EY can take is to?

-Implement company wide policies to prevent errors from occurring.

-Take the appropriate measures to remedy and wrong doing.

-Take accountability for its actions and be answerable to questions from regulators

-All of the above