Utilize the input text as a context reference, choose the right relationship between 'Daimler' and 'Daimler AG' from the options.
Options: location of formation, parent organization, stock exchange, position held

Daimler Trucks North America, a unit of Germany’s Daimler AG DAI, +0.34% unveiled the SuperTruck earlier this year, part of a program sponsored by the Department of Energy that tasked truck-makers to improve freight efficiency and reduce emissions from big rigs — the kind that carry 70% of the freight shipped on U.S. roads.
parent organization