What is the relationship between 'GMC' and 'General Motors' in the context of the input sentence.
Options: position held, parent organization, employer, headquarters location

General Motors also clarified that the construction work will not affect the production schedules for Chevrolet Tahoes and Suburbans, GMC Yukons and Yukon XLs and Cadillac Escalades.General Motors aims to manufacture and supply the best SUVs in the market.
parent organization