What is the relationship between 'Airbus Group' and 'Airbus' in the context of the input sentence.
Options: subsidiary, position held, legal form, headquarters location

Industry sources have said Airbus Group is exploring increasing its stake in tandem with BAE Systems as part of a wider move that could see Airbus cede its 50 percent share of turboprop maker ATR to its joint-venture partner Finmeccanica.
subsidiary