Triple

Target class: astronaut propulsion unit
Context triple: [MMU backpack, instanceOf, astronaut propulsion unit]

• A. astronaut propulsion system chosen
  An astronaut propulsion system is a compact, controllable device that enables astronauts to maneuver independently in space by generating thrust through expelled propellant or alternative reaction-mass technologies.
• B. modular spacecraft
  A modular spacecraft is a reconfigurable space vehicle composed of interchangeable, standardized modules that can be assembled, upgraded, or replaced to support different missions and functions.
• C. space launch vehicle component
  A space launch vehicle component is a physical subsystem or part—such as engines, tanks, avionics, or structural elements—that contributes to the propulsion, guidance, structural integrity, or support functions required to deliver payloads from Earth to space.
• D. spacecraft service module
  A spacecraft service module is the section of a spacecraft that houses and provides essential support systems—such as propulsion, power, thermal control, and consumables—to enable and sustain the operation of the crew or payload module.
• E. rocket booster
  A rocket booster is a powerful propulsion component that provides the initial thrust needed to lift a launch vehicle off the ground and accelerate it through the early stages of flight.
• F. None of above.