Which 2 statements about blind spots when changing lanes or driving alongside cars in the next lane are correct? Select TWO

1. ①Avoid staying alongside, diagonally behind a car in the next lane (in its blind spot), for a long time.
2. ②Small vehicles such as two-wheeled vehicles and bicycles are hard to see in the mirrors, so check especially carefully before changing lanes.
3. ③Turn the steering wheel at the same moment you switch on the turn signal and change lanes immediately.
4. ④If the car has a rear camera or blind-spot warning system, there is no need to check directly.