During the day, if due to a breakdown we leave the vehicle immobilised on the shoulder of a road, how shall we do it?

A)Placing the pre-warning danger device and using the hazard warning signal.Correct
B)Since it is daytime, we will only place the pre-warning danger triangles.
C)If the vehicle is on the shoulder, only the hazard warning signal will be necessary.
In the event of a breakdown, both during the day and at night, we must use the hazard warning signal or light and also place the pre-warning danger device.
The V-16 pre-warning danger device is a homologated auto-yellow luminous device with geolocation, powered autonomously (battery). It must be placed at the highest part of the immobilised vehicle, ensuring maximum visibility. Currently, the V-16 is the only legal option to signal an immobilised vehicle or an obstacle on the road, with the pre-warning triangles being phased out.
The V-16 pre-warning danger device is a homologated auto-yellow luminous device with geolocation, powered autonomously (battery). It must be placed at the highest part of the immobilised vehicle, ensuring maximum visibility. Currently, the V-16 is the only legal option to signal an immobilised vehicle or an obstacle on the road, with the pre-warning triangles being phased out.