Marketable Debt Securities Facebook reports the following in its 2018 10-K. The following table summarizes, for assets or liabilities measured at fair value, the respective fair value and the classification by level of input within the fair value hierarchy (in millions): Fair Value Measurement at Reporting Date Using Quoted Prices in Active Significant Other Significant Markets for identical Asset Observable Inputs Nonobservable Inputs Description Dec 31, 2018 (Level 1) (Level 2) (Level 3) Cash equivalents: Money market funds $6,113 $6,113 $- $- U.S. government securities 81 81 U.S. government agency securities 49 49 Certificate of deposits and time deposits 332 332 Corporate debt securities 1 1 Marketable securities: U.S. government securities 12,452 12,452 U.S. government agency securities 7,500 7,500 Corporate debt securities 8,033 8,033 Total cash equivalents and marketable securities $34,561 $26,195 $8,366 The gross unrealized losses on our marketable securities were $321 million and $260 million as of December 31, 2018 and 2017, respectively. The gross unrealized gains for both periods were not significant a. What does Facebook report as (in millions): 1. Cash equivalents at December 31, 2018? $ 2. Marketable securities at December 31, 2018? $ b. What is the chief difference between Cash equivalents and Marketable securities? Cash equivalents have remaining maturity of Marketable securities have maturity . c. What is the cost of its marketable securities (in millions)? Hint: Consider that its marketable securities are in a loss position. $