A. China
B. Iraq
C. Iran
D. None of these
Explanation:
In accordance with the JCPOA, Iran must fill the calandria, or reactor core , at the Arak facility with cement to render it unusable. On January 16, 2016, the IAEA Board of Governors released a report by the Director General, which confirmed that Iran had removed and “rendered inoperable” the Arak facility’s calandria.