Mounting pressure on suppliers for price cuts comes as Airbus and Boeing are raising production of their single-aisle models to around 50 aircraft a month each, up from 42 a month, and pondering a further step-up to 60 a month.
Utilize the input text as a context reference, choose the right relationship between 'Airbus' and 'aircraft' from the options.
Options: operator, product/material produced, original broadcaster, publisher