In the event of a mechanical breakdown on a two-lane rural route in Argentina, at what minimum distances must the two reflective warning triangles (balizas portátiles) be placed?

1. Both placed directly on the rear bumper of the vehicle
2. One triangle placed at least 50 meters behind the vehicle and the second placed approximately 50 meters ahead (or 100 meters behind on one-way highways)
3. Placed 5 meters in front of each front tire
4. Placed on top of the vehicle roof alongside an illuminated flashlight