Triple

Target entity: Delta IV
Context triple: [EELV program, resultedInVehicleFamily, Delta IV]

• A. Delta IV chosen
  Delta IV is an expendable heavy-lift launch vehicle family developed by Boeing and operated by United Launch Alliance for launching military, government, and commercial payloads into orbit.
• B. Delta III
  Delta III was an American expendable launch vehicle developed in the late 1990s as an upgraded, higher-capacity member of the Delta rocket family, intended primarily for launching communications satellites to geostationary orbit.
• C. Delta IV Heavy
  Delta IV Heavy is a powerful American expendable heavy-lift launch vehicle developed by United Launch Alliance, known for carrying large payloads to orbit and supporting national security and scientific missions.
• D. Delta 4000
  Delta 4000 is an American expendable launch vehicle series derived from the Delta family, used primarily in the early 1990s to place communications and weather satellites into orbit.
• E. Delta 3000
  Delta 3000 is a series of American expendable launch vehicles, part of the Delta rocket family, used primarily in the 1980s to place communications and weather satellites into orbit.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.