Refer to the input text as context and select the correct relationship between 'Daimler AG' and 'Mercedes-Benz' from the available options.
Options: chairperson, parent organization, subsidiary, brand

German luxury car makers Audi, a unit of Volkswagen AG VLKAY 0.06 % , Mercedes-Benz parent Daimler AG DDAIY 0.85 % , and BMW AG BMW -0.49 % have agreed in principle to purchase the telecommunications group’s digital mapping service Nokia Here, according to a person familiar with the situation.
brand