7. Consider the following statements regarding the official definition of heat wave in India:
- If the normal maximum temperature of a station is more than 40°C, then an increase of 4°C to 5°C from the normal temperature is considered to be heat wave condition.
- If the normal maximum temperature of a station is more than 40°C, then an increase of 4°C to 5°C from the normal temperature is considered to be heat wave condition.
- A heat wave is also considered when the maximum temperature of a station reaches at least 40°C for Plains and at least 35°C for Hilly regions.
Which of the above statements is/are correct?