Which is the most appropriate way to adjust the driver's seat and driving posture?

1. ①Recline the seatback far back and hold the wheel with arms fully stretched
2. ②Slide the seat far back so your legs are straight and your toes barely reach the pedals
3. ③Sit with your hips pressed deep into the seatback, and adjust so your knee stays slightly bent with the brake fully pressed and your elbows are slightly bent when holding the top of the wheel
4. ④Sit with your chest pressed close to the wheel so you can see ahead better