Answer:
B. Credit to the fair value adjustment for $6000
Step-by-step explanation:
December 31 (year 2)
Fair value adjustment account balance = $10,000 (Debit)
December 31 (year 3)
Fair value adjustment account balance = $154,000 - $150,000 =$4,000 (Debit)
As you can see in year 2 there were only $10,000 (debit) in fair value adjustment account but in year 3 the value dropped down to 4,000 debit which leads us to the journal entry of $6,000 Credit in fair value adjustment account balance