Find online the annual​ 10-K report for Costco Wholesale Corporation​ (COST) as of September​ 1, 2019. Answer the following questions from the income​ statement: a. What were Costco revenues for that​ year? By what percentage did revenues grow from the prior​ year? b. What were Costco operating and net profit margins in that​ year? How do they compare with its margins in the prior​ year? c. What were Costco diluted earnings per share in that​ year? What number of shares is this EPS based​ on?