If a traffic police vehicle is behind you and activates a device with a flashing red light in front, what should you do?

If a traffic police vehicle is behind you and activates a device with a flashing red light in front, what should you do?
A)Reduce speed and move to the right to facilitate overtaking.
B)Stop on the left side of the road, in front of the police vehicle.
C)Stop and, if applicable, follow the officer's instructions.Correct