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: Two features of the cumulative case study, shown in table 3.7, are the case survey method just described as a means of aggregating findings (Lucas, 1974; Yin and Heald, 1975; Yin et al. Choices:  1. The case study had only one feature. 2. The case study described means of aggregating findings. 3. The findings were groundbreaking in the field.

2