find online the annual 10-k report for costco wholesale corporation (cost) as of september 1, 2019. answer the following questions from its cash flow statement: a. how much cash did costco generate from operating activities in that year? b. what was costco's depreciation expense in that year? c. how much cash was invested in new property and equipment (net of any sales) in that year? d. how much did costco raise from the sale of shares of its stock (net of any purchases) in that year?