In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following? 1. Area of the hole in the lid 2. Temperature of the flame 3. Weight of the lid Select the correct answer using the code given below.

1. A pressure cooker works by increasing the pressure inside the pot, which raises the boiling point of water above 100°C. The higher temperature allows food to be cooked faster. 2. The maximum pressure inside the cooker is regulated by a valve, often a weight placed over a vent hole in the lid. Steam escapes when the internal pressure exerts enough force on this weight to lift it. 3. Statement 1 is correct. The pressure (P) required to lift the regulating weight (W) depends on the Area (A) of the vent hole (P = W/A). Therefore, the area of the hole influences the maximum pressure achieved and, consequently, the cooking temperature. 4. Statement 2 is incorrect. The temperature of the flame determines how quickly the operating pressure and temperature are reached, but it does not determine the maximum cooking temperature itself. The maximum temperature is set by the boiling point at the pressure regulated by the valve mechanism. 5. Statement 3 is correct. Assuming 'Weight of the lid' refers to the regulating weight on the vent, this weight is the primary factor determining the force required to release steam. A heavier weight requires higher internal pressure to lift, leading to a higher cooking temperature. Therefore, the cooking temperature depends mainly upon the area of the hole in the lid and the weight of the regulating valve.