Analyze the relationship between 'Paccar' and 'Truck' within the context of the input sentence.
Options: product/material produced, business division, platform, distributed by

Truck maker Scania, a unit of Volkswagen AG, said its orders rose 41 percent in the second quarter in Europe, compared to the same period last year, while U.S. rival Paccar Inc (PCAR.O) said orders at its European unit, DAF, were 60 percent higher in the quarter, as growing freight traffic -- a key economic indicator -- drove sales.
product/material produced