"What is the primary role of the International Accounting Standards Board $($IASB$)$ in the context of setting International Financial Reporting Standards $($IFRS$)$ and fostering global accounting harmonization?

A$)$ Enforcing compliance with national accounting regulations

B$)$ Developing standardized financial reporting guidelines

C$)$ Providing oversight for regional accounting bodies

D$)$ Implementing tax regulations for multinational corporations"