Can you overtake in a tunnel?
A)No, in no case.
B)Yes, two-wheeled vehicles.
C)Yes, when there is more than one lane in the same direction of travel as the vehicle to be overtaken.Correct
As a general rule, overtaking is prohibited in tunnels, underpasses and stretches with the tunnel sign, unless there is more than one lane in the direction of travel of the vehicle to be overtaken and, therefore, the opposite direction is not invaded.