ULA EELV-class launchers

Target entity: ULA EELV-class launchers
Context triple: [Vulcan Centaur, successorTo, ULA EELV-class launchers]

• A. Antares launch vehicle
  The Antares launch vehicle is a medium-lift rocket primarily used to deliver cargo to the International Space Station under NASA’s Commercial Resupply Services program.
• B. Epsilon launch vehicle
  The Epsilon launch vehicle is a Japanese solid-fuel rocket designed for cost-effective, small satellite launches into orbit.
• C. HL-20 Personnel Launch System
  The HL-20 Personnel Launch System was a NASA-designed lifting-body spaceplane concept from the late 20th century intended to provide a reusable, crewed vehicle for low Earth orbit missions and runway landings.
• D. Vanguard rocket
  The Vanguard rocket was an early American expendable launch vehicle developed in the 1950s to place the first U.S. satellites into orbit during the early years of the Space Race.
• E. Titan IIIC
  Titan IIIC was a U.S. Air Force heavy-lift expendable launch vehicle used primarily in the 1960s and 1970s to place military and experimental payloads into orbit.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: ULA EELV-class launchers
Target entity description: ULA EELV-class launchers are a family of expendable rockets, including the Atlas V and Delta IV vehicles, developed by United Launch Alliance to provide reliable medium- to heavy-lift launch services for U.S. government and commercial payloads.

• A. Antares launch vehicle
  The Antares launch vehicle is a medium-lift rocket primarily used to deliver cargo to the International Space Station under NASA’s Commercial Resupply Services program.
• B. Epsilon launch vehicle
  The Epsilon launch vehicle is a Japanese solid-fuel rocket designed for cost-effective, small satellite launches into orbit.
• C. HL-20 Personnel Launch System
  The HL-20 Personnel Launch System was a NASA-designed lifting-body spaceplane concept from the late 20th century intended to provide a reusable, crewed vehicle for low Earth orbit missions and runway landings.
• D. Vanguard rocket
  The Vanguard rocket was an early American expendable launch vehicle developed in the 1950s to place the first U.S. satellites into orbit during the early years of the Space Race.
• E. Titan IIIC
  Titan IIIC was a U.S. Air Force heavy-lift expendable launch vehicle used primarily in the 1960s and 1970s to place military and experimental payloads into orbit.
• F. None of above. chosen