Even though the Railways are the most pervasive mode of transport in India, it is the road transport which received the maximum impetus in most of the post-independence period. Which of the following are the reasons for this? I. Railways are cheap to operate but the associated capital costs are very high. II. Given the geographic spread of the human settlements, it is umealistic that the railways alone can serve the needs of transport. III. The per unit (tonne/km) cost of transport is cheaper in road compared to rail transport. IV. Given the indivisible nature of the Railways, it is not always convenient for the population to avail of it with the same ease as private cars, buses or two-wheelers. Select the correct answer from the codes given below Codes: