With reference to 'Global Environment Facility', which of the following statement(s) is/are correct?

• A. It serves as the financial mechanism for the 'Convention on Biodiversity' and the United Nations Framework Convention on Climate Change'.
• B. It conducts scientific research on environmental issues at the global level.
• C. It is an agency under the OECD that facilitates transfer of technology and funds to underdeveloped countries with the specific objective of protecting their environment.
• D. both a and B