Triple

Target entity: United States Atomic Energy Commission
Context triple: [Operation Upshot–Knothole, operator, United States Atomic Energy Commission]

• A. United States Atomic Energy Commission chosen
  The United States Atomic Energy Commission was the federal agency that oversaw and regulated the development, production, and civilian use of nuclear energy and weapons in the United States during the early Cold War era.
• B. Energy Research and Development Administration
  The Energy Research and Development Administration was a former U.S. government agency responsible for coordinating federal energy research, development, and nuclear energy programs in the mid-1970s.
• C. U.S. Nuclear Regulatory Commission
  The U.S. Nuclear Regulatory Commission is the federal agency responsible for overseeing and ensuring the safe use of nuclear materials and facilities in the United States.
• D. Los Alamos Laboratory
  Los Alamos Laboratory was the secret U.S. research facility in New Mexico where the Manhattan Project developed the first atomic bombs during World War II.
• E. Knolls Atomic Power Laboratory
  Knolls Atomic Power Laboratory is a U.S. Navy–funded research and development facility that designs, tests, and supports nuclear propulsion systems for the United States naval fleet.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.