Utilize the input text as a context reference, choose the right relationship between 'Airbus' and 'Airbus A380' from the options.
Options: founded by, subsidiary, product/material produced, parent organization

Planemaker Airbus Group SE and aircraft lessor Intrepid Aviation Ltd are the biggest creditors to Skymark, which ran into financial trouble after embarking on an ambitious expansion that included buying Airbus A380 jumbo jets.
product/material produced