Please answer the following question: Bharat Yantra Nigam - Bharat Yantra Nigam Limited (BYN) is a Public Sector Undertaking (PSU) of the Government of India and is the holding company of six engineering PSUs spread across five states. The subsidiaries include: Bharat Heavy Plate and Vessels Bharat Pumps & Compressors Bridge and Roof Company Richardson and Cruddas Triveni Structurals Tungabhadra Steel ProductsThe company is headquartered in Allahabad and serves multiple sectors including power petroleum refineries and railways. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Company