Correct Answer: (e) Both China & Indonesia
Solution:The Organization of the Petroleum Exporting Countries (OPEC) was founded in Baghdad, Iraq, with the signing of an agreement in September, 1960 by the five countries namely Iran, Iraq, Kuwait, Saudi Arabia and Venezuela. They became the founder members of the OPEC. OPEC has since 1965 been headquartered in Vienna, Austria. At present, the OPEC has a total of 12 members countries. These are: Iraq, Iran, Kuwait, Saudi Arabia, Venezuela, Libya, United Arab Emirates, Algeria, Nigeria, Gabon, Congo, Equatorial Guinea. Qatar terminated its membership on 1 January, 2019. Ecuador decided to withdraw its membership of OPEC effective 1 January, 2020. Angola withdrew its membership effective 1 January, 2024. Indonesia suspended its membership on 30 November, 2016. When the question was asked, Indonesia was a member of OPEC. Hence, as per the question period option (b) was the correct answer, but at present, both (b) and (c) are correct.