As far as the fleet, as we announced in April, our fleet simplification plan went into high gear during the quarter as we officially retired the Embraer 190s, Boeing 757s, Boeing 767s, and Airbus A330-300 aircraft as well as a number of regional jets.
Take context from the input text and decide on the accurate relationship between 'Airbus' and 'aircraft' from the options provided.
Options: subsidiary, owner of, product/material produced, member of