Question 4 On December 31 the fair value of available-for-sale securities is $41,300 and the cost is $39,800. On January 1, 2020, there was a credit balance of $900 in the Fair Value Adjustment-Available-for-Sale account. The required adjusting entry would be debit Fair Value Adjustment-Available-for-Sale for $2,400 and credit Unrealized Gain or Loss-Equity for $2,400. debit Unrealized Gain or Loss-Equity for $2,400 and credit Fair Value Adjustment-Available-for-Sale for $2,400. debit Fair Value Adjustment-Available-for-Sale for $1,500 and credit Unrealized Gain or Loss-Equity for $1,500. debit Fair Value Adjustment-Available-for-Sale for $600 and credit Unrealized Gain or Loss-Equity for $600