Definition: In this task, you're given a statement and three sentences as choices. Your job is to determine which sentence can be inferred from the statement. Incorrect choices change the meaning in important ways or have details that are not mentioned in the statement. Indicate your answer as 1,2, or 3 corresponding to the choice number of the selected sentence.
Input: Statement: Measurement Case study methods can use two tactics for achieving measurement  multiple sources of evidence Choices:  1. There is only one tactic that should be used to improve case study methods. 2. There are two ways to get proper measurements for case studies. 3. Multiple sources of evidence and an independent review will allow case studies to be more accurate.

2