You are given a sentence and a question. You're expected to write the correct answer based on the sentence.
Q: Sentence: Clark just brought an icicle in from outside and is trying to melt it by rubbing it against two different places in his house. The first place is his granite counter-top, which has no bumps or cracks in it. The second place is against the rough carpet in his living room. Question: Which surface will melt the ice faster?
A: 
carpet