|A) Varanasi||B) Chittaranjan|
|C) Perambur||D) Kolkata|
The Integral Coach Factory at Perambur has become a leading rail coach manufacturing factory in the world. Chittaranjan Loco Works now produce diesel engines. Diesel engines are also being assembled at varanasi and Jamshedpur (Tata Elecrtic company of TELCO), BEML also manufactures railway wagons.