Context: The snow was nt deep ( it had been windpacked from the 50kph winds during the storm ) , but it was smooth and fun . A great improvement over the previous weekend . That night we went back to ChCh with the roads being infinitely better . We suspect it was all the cars with chains that cut the ice up so it eventually melted .

Question: Why were the roads infinitely better that night ?
Options:
0. None of the above choices .
1. Since it was not deep it melted .
2. Because the cars with chains driving on them all day cut up all the snow and ice causing it to melt .
3. Because it was windpacked and smooth during the storm .
Answer: 2