Answer below questions based on the following information:
The questions are based on the pie charts given below. Chart $1$ shows the distribution of twelve million tons of crude oil transported through different modes over a specific period of time. Chart $2$ shows the distribution of the cost of transporting this crude oil. The total cost was Rs. $30$ million.
From the charts given, it appears that the cheapest mode of transport is
- Road
- Rail
- Pipeline
- Ship