The Hindustan Petroleum Corp (HPCL) scrip fell 7.56%, while Bharat Petroleum Corp (BPCL) and the country’s biggest state-run refiner, Indian Oil Corp (IOC), declined 6-78% each.
Utilize the input text as a context reference, choose the right relationship between 'Hindustan Petroleum' and 'Petroleum' from the options.
Options: product/material produced, subsidiary, director/manager, brand