Utilize the input text as a context reference, choose the right relationship between 'Aerojet' and 'Aerojet Rocketdyne Holdings' from the options.
Options: developer, operator, headquarters location, parent organization

CAPE CANAVERAL, Fla. Sept 24 (Reuters) - Aerojet Rocketdyne Holdings Inc will pay Orbital ATK $50 million to settle a dispute stemming from an Antares rocket launch accident last year that destroyed a load of cargo bound for the International Space Station, Aerojet said on Thursday.
parent organization