Which of the following statements regarding air temperature is/are correct? 1. Air temperature is measured at a standard height of 1.2 m (4.0 feet) above the ground surface. 2. The average rate of temperature decrease with height is termed as the environmental temperature lapse rate. Select the answer using the code given below :

Both statements are correct. Air temperature is conventionally measured at a standard height of 1.2 meters (about 4 feet) above the ground surface using thermometers placed inside a Stevenson screen, which shields them from direct sunlight and precipitation while allowing free air circulation. The Environmental Lapse Rate (ELR) is defined as the average rate at which temperature decreases with increase in altitude in the troposphere, approximately 6.5°C per kilometer.