The top part of Mars, Inc.'s 2018 balance sheet is listed as follows (in millions of dollars). Current assets: Current liabilities: Cash and marketable securities $ 10 Accrued wages and taxes $ 20 Accounts receivable 40 Accounts payable 30 Inventory 160 Notes payable 40 Total $ 210 Total $ 90 What are Mars, Inc.'s current ratio, quick ratio, and cash ratio for 2018?