Imagine you are constructing Tiered Indexes to improve the efficiency of your search engine. Which of the following statements is false?
1) You will break index up into tiers of decreasing importance.
2) You can break the index by Authority or term frequency, among other scores.
3) Using Authority to break the index, the same document may appear in different tiers.
4) Using term frequency to break the index, same documents may appear in different tiers.