Read the following article and answer the question by choosing from the options.

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 .

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