Triple

Target entity: United States strategic nuclear triad (land-based component)
Context triple: [Peacekeeper missile solid rocket motors, partOf, United States strategic nuclear triad (land-based component)]

• 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. Russian nuclear triad
  The Russian nuclear triad is Russia’s three-pronged strategic nuclear deterrent, consisting of land-based intercontinental ballistic missiles, submarine-launched ballistic missiles, and long-range strategic bombers.
• C. 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.
• D. 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.
• E. Minuteman III
  Minuteman III is an American intercontinental ballistic missile (ICBM) that has served as a key land-based component of the United States' nuclear deterrent since the 1970s.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.