Fiat Chrysler Labor Contract in Doubt: Workers at several of Fiat Chrysler Automobiles factories have rejected a proposed labor contract, indicating the Italian-U.S. auto maker is having a tough time selling a four-year deal that raises wages but falls short of expectations.
Take context from the input text and decide on the accurate relationship between 'Chrysler' and 'Fiat Chrysler Automobiles' from the options provided.
Options: owned by, platform, headquarters location, business division