Which of the following statements is false? a. when properly used, either nonstatistical or statistical sampling can be effective in providing sufficient appropriate audit evidence. b. statistical sampling allows the auditor to precisely control the risk of making an incorrect inference about the population from which the sample is taken, whereas nonstatistical sampling does not allow such control. c. nonstatistical sampling may avoid second guessing by regulators or jurors should those parties question the quality of the sampling method used. d. combining statistical sampling with audit judgment generally produces a higher quality audit conclusion than using audit judgment alone.