What is the relationship between A350 and Airbus in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

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.

Answer: developer