Which of the following is NOT a requirement for testing a claim about a mean with σ ​known? Choose the correct answer below. A. A conclusion based on a confidence interval estimate will be the same as a conclusion based on a hypothesis test. B. ​If, under a given​ assumption, there is an exceptionally small probability of getting sample results at least as extreme as the results that were​ obtained, we conclude that the assumption is probably not correct. C. If the sample results​ (or more extreme​ results) can easily occur when the null hypothesis is​ true, we attribute the relatively small discrepancy between the assumption and the sample results to chance. D. If the sample results​ (or more extreme​ results) cannot easily occur when the null hypothesis is​ true, we explain the discrepancy between the assumption and the sample results by concluding that the assumption is​ true, so we do not reject the assumption.