You are travelling in a lane and above it you find a traffic light with a red X-shaped light. What does it mean?

You are travelling in a lane and above it you find a traffic light with a red X-shaped light. What does it mean?
A)That you must brake at that point as if it were a traffic light with a circular red light.
B)That you must reduce your speed due to special traffic circumstances.
C)That you must leave it as soon as possible because occupying that lane is prohibited.Correct
A red X-shaped light indicates that it is prohibited to occupy the indicated lane. Vehicles travelling in a lane where this type of red light comes on must leave it as soon as possible, always under safe conditions.