Find online the annual 10-K report for Costco Wholesale Corporation (COST) for fiscal year 2018 (filed in October 2018). Answer the following questions from its cash flow statement:

a. How much cash did Costco generate from operating activities in 2018?
b. What was Costco depreciation expense in 2018?
c. How much cash was invested in new property and equipment (net of any sales) in 2018?
d. How much did Costco raise from the sale of shares of its stock (net of any purchases) in 2018?