Find online the annual 10-K report for Costco Wholesale Corporation (COST) for fiscal year 2015 (filed in October 2015). Answer the following questions from the income statement: a. What were Costco's revenues for 2015? By what percentage did revenues grow from the prior year? b. What were Costco's operating and net profit margins in 2015? How do they compare with its margins in the prior year? c. What were Costco's diluted earnings per share in 2015? What number of shares is this EPS based on? a. What were Costco's revenues for 2015? By what percentage did revenues grow from the prior year? (Select the best choice below.) O A. Revenues for 2015 were $107,861 million and they increased by 7.18% with respect to 2014. B. Revenues for 2015 were $110,560 million and they increased by 2.50% with respect to 2014. C. Revenues for 2015 were $116,199 million and they increased by 3.16% with respect to 2014. OD. Revenues for 2015 were $112,640 million and they increased by 1.88% with respect to 2014. b. What were Costco's operating and net profit margins in 2015? How do they compare with its margins in the prior year? (Select the best choice below.) OO A. Operating profit margin was 2.80% while net profit margin was 1.78%. Both decreased with respect to those of 2014. B. Operating profit margin was 3.12% while net profit margin was 2.05%. Both increased with respect to those of 2014. C. Operating profit margin was 2.86% while net profit margin was 1.83%. Both decreased with respect to those of 2014. D. Operating profit margin was 2.85% while net profit margin was 1.80%. Both increased with respect to those of 2014. O c. What were Costco's diluted earnings per share in 2015? What number of shares is this EPS based on? (Select the best choice below.) OOOO O A. The diluted earnings per share were $7.35 and were based on 447.20 million shares. B. The diluted earnings per share were $5.37 and were based on 442.70 million shares. C. The diluted earnings per share were $5.73 and were based on 424.70 million shares. OD. The diluted earnings per share were $3.57 and were based on 427.40 million shares