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.
Take context from the input text and decide on the accurate relationship between 'Hindustan Petroleum' and 'Petroleum' from the options provided.
Options: subsidiary, brand, director/manager, product/material produced