Triple

Target entity: United States strategic nuclear forces
Context triple: [Nuclear posture of NATO, supportedBy, United States strategic nuclear forces]

• A. United States nuclear triad chosen
  The United States nuclear triad is the three-pronged strategic deterrent system consisting of land-based intercontinental ballistic missiles, submarine-launched ballistic missiles, and strategic bomber aircraft.
• B. Nuclear weapons policy of the United States
  The nuclear weapons policy of the United States encompasses the doctrines, laws, treaties, and strategic decisions that govern the development, deployment, potential use, and control of U.S. nuclear weapons.
• C. United States nuclear weapons complex
  The United States nuclear weapons complex is the nationwide network of laboratories, production plants, and storage facilities responsible for the research, development, maintenance, and dismantlement of the U.S. nuclear arsenal.
• D. United States nuclear weapons program
  The United States nuclear weapons program is the government-led effort that developed, tested, and maintains the nation’s nuclear arsenal, originating with the Manhattan Project during World War II and continuing as a central element of U.S. military and deterrence strategy.
• E. Trident nuclear missile system
  The Trident nuclear missile system is the United Kingdom’s submarine-launched ballistic missile-based nuclear deterrent, carried by its Vanguard-class submarines as the core of its strategic defense.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.