The following statements about corporate governance are correct: I.Corporate governance is a code of conduct governing the relationship between shareholders, directors and the company; II.Good corporate governance requires that management (directors and senior managers) act transparently and in the interests of all shareholders； III. In Hong Kong,Important elements of corporate governance include the appointment of independent non-executive directors and the establishment of audit, nomination and remuneration committees;IV. Requiring company directors and officers to enhance the implementation of corporate governance practices is the main practice of quality control in stock exchanges.
选项：

A:I, II, III
B:I, II, IV
C:II, III, IV
D:I, II, III, IV