Answer:
b. Credit to Fair value adjustment for $5,000
Step-by-step explanation:
Particulars Amount
Beginning balance of fair value adjustment $20,000
Less: Unrealized gain on Dec 31, year 3 $15,000 ($515,000-$500,000)
Credit to Fair value adjustment $5,000
So, Credit to Fair value adjustment for $5,000 will be included in the related journal entry dated December 31, Year 3.