Multi-choice problem: Choose from the options at the end, and answer how do you do this: how to preheat an air fryer

Pick from: A. The preheating of the airfryer takes about 2-3 minutes. With the Philips Viva Airfryer, the timer button lets you preheat the device by adjusting the timer to five minutes and waiting until the warm-up light comes on and blows the bulb. Fill the basket after that and turn the timer knob to the required cooking time. B. The preheating of the airfryer takes about 2-3 minutes. With the Philips Viva Airfryer, the timer button lets you preheat the device by adjusting the timer to five minutes and waiting until the warm-up light goes out. Fill the basket after that and turn the timer knob to the required cooking time.
B.