What Is the Main Objective of the IASB

What is the main objective of the IASB?

A) To develop,in the public interest,a single set of high quality,understandable and enforceable global accounting standards that require high quality,transparent and comparable information in financial statements and other financial reporting to help participants in the world's capital markets and other users make economic decisions.
B) To promote the use and rigorous application of those standards.
C) To bring about convergence of national accounting standards and International Accounting Standards and International Financial Reporting Standards to high quality solutions.
D) All of these.