Correct Option: B

The history of rail transport in India began in the mid-nineteenth century. In 1849, there was not a single kilometer of railway line in India. By 1929, there were 66,000 km of railway lines serving most of the districts in the country. At that point of time, the railways represented a capital value of some British Sterling Pounds 687 million. The primary purpose for the introduction of railways was to serve the colonial interests in a better way. Besides, the Revolt of 1857 had shown how vulnerable and fragile the roots of British rule could be. So Railways were introduced to organize administration in a better way and facilitate British commercial interests in India.