If we are stopped inside a tunnel due to traffic congestion, which lights should we keep on?

If we are stopped inside a tunnel due to traffic congestion, which lights should we keep on?
A)Position lights and dipped beam lights.
B)Position lights and hazard warning lights.Correct
C)Only the position lights.
If due to traffic needs a vehicle is immobilized inside a tunnel or underpass:
- The driver and passengers must not leave the vehicle.
- In this case, the hazard warning signal must be turned on temporarily to warn other drivers travelling behind.
- The position lights must be kept on.
- The engine must be switched off.
- The vehicle must be kept as far as possible from the vehicle in front.