Triple

Target entity: Defense Nuclear Facilities Safety Board
Context triple: [Waste Treatment and Immobilization Plant, regulator, Defense Nuclear Facilities Safety Board]

• A. Defense Nuclear Facilities Safety Board chosen
  The Defense Nuclear Facilities Safety Board is an independent U.S. federal agency that oversees and advises on safety standards and practices at Department of Energy defense nuclear facilities.
• B. 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.
• C. National Nuclear Security Administration
  The National Nuclear Security Administration is a U.S. government agency responsible for enhancing national security through the military application, safety, and security of nuclear science and technology.
• D. Office of Nuclear Energy
  The Office of Nuclear Energy is a division of the U.S. Department of Energy responsible for advancing nuclear power technologies, policy, and research to support the nation’s energy needs.
• E. Department of Nuclear Safety and Security
  The Department of Nuclear Safety and Security is the division of the IAEA responsible for establishing international safety standards and providing guidance and support to ensure the safe and secure use of nuclear technology worldwide.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.