In what was then the largest environmental enforcement case in U.S. history, companies including industry leaders Caterpillar Inc., Cummins Engine Co., Mack Trucks and Volvo Truck Corp. agreed to pay $83.4 million in fines and reprogram the computers.
Utilize the input text as a context reference, choose the right relationship between 'Volvo' and 'Truck' from the options.
Options: brand, founded by, product/material produced, owner of