Radha uses travel tickets of different types. Which of the following concepts could be effectively discussed by using such tickets?
A. The cost of travel by different means is different.
B. The cost of travel depends upon the fuel used by the vehicle.
C. We need tickets to travel by public transport from one place to another.
D. Understanding the reservation process.

Options

A. Aand D
B. A and C
C. B and C
D. C and D

Answer

B