What is the relationship between 'Reliance Infrastructure' and 'Mumbai' in the context of the input sentence.
Options: original broadcaster, headquarters location, brand, member of

Reliance Infra: Anil Ambani -led Reliance Infrastructure (RInfra) on Wednesday reported 12.39 per cent decline in net profit for the quarter ended June 30 at Rs 400.91 crore mainly due to losses incurred by its cement and Mumbai metro businesses in spite of an increase in revenues.
headquarters location