Find the annual 10-K report for Costco Wholesale Corporation (COST) for fiscal year 2015 (filed in October 2015). Answer the following questions from its balance sheet:
a. How much cash did Costco have
b. What were Costco's total assets?
c. What were Costco's total liabilities? How much debt did Costco have?
d. What was the book value of Costco's equity?