Explanation please

BTN 11-3 Access the February 22, 2019, filing of the 2018 calendar-year 10-K report of McDonald's (ticker: MCD) from SEC.gov. Required 1. Review McDonald's balance sheet and identify how many classes of stock it has issued. 2. What are the par values, number of authorized shares, and number of issued shares of the classes of stock you identified in part 1 ? 3. Review its statement of cash flows and identify what total amount of cash it paid in 2018 to purchase treasury stock. 4. What amount did McDonald's pay out in common stock cash dividends for 2018