What are you required to do when you see that the overtaking silver vehicle intends to return to the right lane?

1. Deviate to the left lane and overtake the vehicle in front.
2. Correct answer: Allow it to return safely and without disturbance.
3. Drive faster in the right lane and overtake the driver before he deviates to the right.
4. Honk to warn and deter the driver who deviates to the right.

WhyThe silver car wants to get back to the right after overtaking. Let it do so safely; do not speed up or get in its way.