On January 1, 2017, Marianne Corp. purchased $50,000, of Robin Ltd.'s 4%, 10-year bonds for $48,000, since the market interest rate was approximately 4.5%. The bonds pay interest on January 1 and July 1. Marianne has a calendar year end, and classified the bonds as long-term investments. The fair value on December 31, 2017 was $48,500. Marianne sold the bonds on January 2, 2018 for $48,500. The entry for the sale of the bonds on January 2, 2018 is: Cash 48,500 Realized Gain on Bond Sale Long-Term Investments 338 48,162 Cash Long-Term Investments 48,500 Cash 48,500 48,500 Realized Gain on Bond Sale Long-Term Investments 500 48,000 Cash 48,500 Realized Gain on Bond Sale Long-Term Investments 420 48,080 On January 1, 2018, Burkett Corporation purchased, as a long-term investment, a $25,000, 5% bond, for $21,595. At this time, the market rate of interest was approximately 7%. The bond pays interest on January 1 and July 1. On December 31, 2018, the fair value of the bonds was $23,950. What is the entry (if any) to record the fair value adjustment on December 31, 2018? Assume the adjusting entry for the interest accrual has already been recorded. 181 Long-Term Investments Unrealized Gain on Long-Term Investments Long-Term Investments Realized Gain on Long-Term Investments No entry required. 181 216 216 Long-Term Investments Unrealized Gain on Long-Term Investments 216 216