What setting of the reverser may cause the inability to drive a double-carriage tram?
1. In the first carriage the reverser is set to "P" and in the second carriage to "0".
2. In the first carriage the reverser is set to "P" and in the second carriage to "T".
3. In the first carriage the reverser is set to "T" and in the second carriage to "0".
