Take context from the input text and decide on the accurate relationship between 'Airbus' and 'A350' from the options provided.
Options: developer, product/material produced, platform, owned by

And as you would expect, we did everything possible to reduce all nonessential spend, including reaching agreement with Airbus to defer orders of A350 and A321neos, and we're still in negotiation with Boeing on deferrals of the 777-9 program.
product/material produced