At what moment does the advanced driver assistance system known as "RCTA or Rear Cross Traffic Alert" issue a warning to the driver?

A)When it detects a vehicle approaching transversally at the next intersection and there is a risk of collision.
B)When performing an overtaking manoeuvre, it detects a vehicle approaching from the opposite direction.
C)When reversing out of a parking space, it detects a vehicle approaching transversally.Correct
The system monitors rear cross traffic when reversing out of a perpendicular parking space. If it detects an approaching vehicle and the estimated time to collision between both is 2 to 3.5 seconds based on the calculation of relative distance/relative speed, an audible and/or visual warning will be issued on the vehicle's multifunction display or on the exterior mirrors themselves. (Some manufacturers, if the driver does not react to the warning, will intervene with maximum braking force in the event of imminent collision, provided the vehicle is travelling at a speed below 15 km/h).