At December 31, 2020, the available-for-sale debt portfolio for Concord, Inc. is as follows.

Security        Cost                     Fair Value    Unrealized Gain (Loss)

A                   $33,250                $28,500         $(4,750)

B                     23,750                  26,600             2,850

C                     43,700                  48,450             4,750

Total            $100,700            $103,550           2,850

Previous fair value adjustment balance—Dr .760

Fair value adjustment                            —Dr .$2,090


On January 20, 2021, Concord, Inc. sold security A for $28,690. The sale proceeds are net of brokerage fees.

(a) Prepare the adjusting entry at December 31, 2020, to report the portfolio at fair value. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter 0 for the amounts.)

Account Titles and Explanation Debit Credit

(b)  Show the balance sheet presentation of the investment-related accounts at December 31, 2020. (Do not leave any answer field blank. Enter 0 for amounts.)