A. rail
B. road
C. air
D. pipeline

Correct Answer: Option A

A. rail

Explanation

Railway transport is cheaper as compared to other means of transport. As a matter of fact, railway transport is even cheaper than road transport because of the reason that goods in bulk quantities are carried from a desired destination to the other. In cases of road transport, for instance, less goods as compared to rail transport can be carried and at a cheaper and inexpensive rate.

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