Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Alstom Metropolis C751A - The Alstom Metropolis C751A trains are the first generation of communication-based train control (CBTC) rolling stock that has been in use in Singapore's Mass Rapid Transit (MRT) lines since 2003. Alstom was contracted in 1997 and 1998 (as Contract C751A) by the Land Transport Authority (LTA) in Singapore to supply for its North East Line in 2003.
The answer to this question is:
Mean Of Transportation