When the use of chains is mandatory, can they be replaced by some other authorised device?

A)No.
B)Yes, by using a snow spray.
C)Yes, by winter tyres.Correct
When we are required to use chains we may continue driving if we have one of the following authorised devices installed:
- Snow chains.
- Other authorised devices, such as textile covers.
- Winter tyres (MS), special for snow and mud.
- Studded tyres, which must have rounded edges and not protrude from the surface by more than two millimetres.
- Snow chains.
- Other authorised devices, such as textile covers.
- Winter tyres (MS), special for snow and mud.
- Studded tyres, which must have rounded edges and not protrude from the surface by more than two millimetres.