As you approach a crosswalk without a traffic light, a person who has gotten off a bicycle is walking it across the crosswalk. What is the correct way to drive?

1. ①A bicycle is a vehicle, so my car goes first
2. ②The person must be protected like a pedestrian, so stop temporarily before the crosswalk (at the stop line if there is one)
3. ③Crossing somewhere other than a bicycle crossing is a violation, so sound the horn as a warning and pass
4. ④Pass through the space behind the person without slowing down