Under ADR 7.5.4, what are the precautions for loading toxic (Class 6.1) or infectious (Class 6.2) substances alongside food or animal feed?

1. They must not be loaded in close proximity to foodstuffs unless separated by distance or partitions
2. They can only be loaded if the foodstuffs are packed in plastic containers
3. They are fully prohibited from being on the same vehicle under any circumstances
4. They must be kept in the driver's cab away from the cargo area