The correct answer is: A. Varanasi
The Varanasi Locomotive Works (VLW) is a locomotive manufacturing factory located in Varanasi, India. It is one of the three locomotive manufacturing units of the Indian Railways, along with the Chittaranjan Locomotive Works (CLW) and the Diesel Locomotive Works (DLW).
VLW was established in 1903 by the British Indian government as the North Western Railway Locomotive Works. It was renamed the Varanasi Locomotive Works in 1947 after India’s independence.
VLW manufactures a wide range of locomotives, including steam locomotives, diesel locomotives, and electric locomotives. It is also a major supplier of locomotives to other countries, including Bangladesh, Nepal, and Sri Lanka.
The other options are incorrect because:
- Perambur is a town in Tamil Nadu, India. It is home to the Integral Coach Factory (ICF), which manufactures railway coaches.
- Chittaranjan is a town in West Bengal, India. It is home to the Chittaranjan Locomotive Works (CLW), which manufactures locomotives.
- Patiala is a city in Punjab, India. It is home to the Patiala Railway Workshop, which maintains and repairs railway locomotives.