Which of the following statements is/are true?
A. If we decrease temperature and increase pressure, we can liquefy atmospheric gases.
B. A hot dry day means the temperature of the atmosphere is high and the humidity of air is low, Both these factors increase the rate of evaporation and thus enormous cooling is produced.
1. 1 only
2. 2 only
3. Both 1 and 2
4. Neither 1 nor 2