Arrange the following statements in sequence for applicability of Chi-square test.
1. Observations are recorded and samples are collected on a random basis.
2. Check whether all the members in the sample must be independent.
3. Check that no group contain items less than 10 otherwise regrouping needs to be done.
4. Check that are constraints are linear.

A. 1, 2, 3, 4

B. 4, 3, 2, 1

C. 3, 2, 1, 4

D. 4, 1, 3, 2

Answer: Option A