Would like help with this problem, not sure how to solve it.

Question 5 (2 points) Saved McGuire Company acquired 90 percent of Toby Company on January 1, 2019, for $234,000 cash. This amount is reflective of Toby's total acquisition date fair value. Toby's stockholders' equity consisted of common stock of $160,000 and retained earnings of $80,000. An analysis of Toby's net assets revealed the following: Book Value Fair Value Buildings (10-year life) $10,000 $ 8,000 Equipment (4-year life) 14,000 18,000 Land 5,000 12,000 Any excess consideration transferred over fair value is attributable to an un amortized patent with a useful life of 5 years. In consolidation at December 31, 2020, what net adjustment is necessary for Toby's Patent account? $6,600 $8,000 $4,200 No adjustment is necessary $5,500