Please answer the following question: Alfred McAlpine plc was a British construction firm headquartered in Hooton Cheshire. It was a major road builder and constructed over 10% of Britain's motorways including the M6 Toll (as part of the CAMBBA consortium). It was listed on the London Stock Exchange until it was acquired by Carillion in 2008. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Company