If you choose A, it basically just says like the number 2, and that is not what it wants. For B, it would be like you are saying for example, some one says how are you? and you say good, how are you? and that other person says good too. Like good as well, you know, and that is not what they want as well. So if C, then that means like to go to the store, or they are actually telling you the location you need to go. So i would just go with the C, to.
Hope that this helps you. =)
