Refer to the input text as context and select the correct relationship between 'Hindustan Petroleum' and 'Petroleum' from the available options.
Options: product/material produced, subsidiary, director/manager, brand

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.
product/material produced