An audit team designed a sample that would provide a 10 percent risk of overreliance that not more than 7 percent of sales invoices lacked credit approval. From previous audits, the audit team expected that 3 percent of the sample invoices lacked proper approval. From the sample of 90 invoices, 7 were found to lack credit approval. Using AICPA sample evaluation tables, the upper limit rate of deviation was
A. 3.3%.
B. 4.5%.
C. 7.8%.
D. 12.8%.
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