Only to say we're very happy with our relationship with Navistar have been for many years and then also have a good relationship with Traton as well and sell to several of their brands whether it's Scania who we have a joint venture with; whether it's MAN who we sold engines to in Brazil for many, many decades.
In the context of the input sentence, determine the relationship between 'Traton' and 'Scania'.
Options: subsidiary, publisher, platform, founded by