What should you do if your vehicle breaks down in a tunnel?

What should you do if your vehicle breaks down in a tunnel?
A)Switch on the full beam headlights to be more visible and have all occupants get out of the vehicle.
B)Stop the vehicle anywhere in the tunnel to avoid danger, even if the breakdown allows the vehicle to move.
C)If the breakdown allows the vehicle to move, continue until you exit the tunnel or reach an area reserved for emergencies.Correct
If, due to an emergency, a driver is immobilised inside a tunnel or underpass, they must: - If the breakdown allows them to continue, they should exit the tunnel or underpass; if that is not possible, steer the vehicle towards the nearest emergency area (lay-by); otherwise, bring the vehicle to a stop at the right-hand edge. In addition, they must: - Switch off the engine, keep the sidelights on and activate the hazard warning lights. - Place and activate the danger pre-warning device. - Both the driver and the other occupants must leave the vehicle, making their way quickly to the nearest refuge or exit, and must not walk along the carriageway if there are areas excluded from vehicle traffic.