Which of the Following Observations Is True About Discovery Sampling

Which of the following observations is true about discovery sampling?

A) It is one of the more difficult statistical sampling variations to understand.
B) Auditors using this method can always be certain that fraud does not exist in a population of checks.
C) It allows an auditor to generalize and make inferences from the population to the sample.
D) It deals with the probability of discovering at least one error in a given sample size if the population error rate is a certain percentage.