E17-9 (L01) (Available-for-Sale Debt Securities Entries and Financial Statement Presentation) At December 31, 2017, the available-for-sale debt portfolio for Steffi Graf, Inc. is as follows. Security Cost Fair Value Unrealized Gain (Loss) $17,500 $15,000 152,500) 12,500 14,000 1,500 23,000 25,500 2,500 Total $53,000 $54,500 Previous fair value adjustment balance-Dr. Fair value adjustment--Dr. On January 20, 2018, Steffi Graf, Inc. sold security A for $15,100. The sale proceeds are not of brokerage fees Instructions (a) Prepare the adjusting entry at December 31, 2017, to report the portfolio at fair value. (b) Show the balance sheet presentation of the investment-related accounts at December 31, 2017. (Ignore notes presentation.) (c) Prepare the journal entry for the 2018 sale of security A