Read the passage given below and answer the question that follows it.
Three airlines — IA, JA and SA — operate on the Delhi- Mumbai route. To increase the number of seats sold, SA reduced its fares and this was emulated by IA and JA immediately. The general belief was that the volume of air travel between Delhi and Mumbai would increase as a result.
Which of the following, if true, would add credence to the general belief?
- Increase in profitability of the three airlines.
- Extension of the discount scheme to other routes.
- A study that shows that air travellers in India are price-conscious.
- A study that shows that as much as 80 per cent of air travel in India is company-sponsored.