just b and c please its one question, thanks !

Pham Company acquired the assets (except for cash) and assumed the liabilities of Senn Company on January 1, 2019, paying $720,000 cash. Senn Company's December 31, 2018, balance sheet, reflecting both book values and fair values, showed: Book Value Fair Value Accounts receivable (net) $ 72,000 $ 65,000 Inventory 86,000 99,000 Land 110,000 162,000 Buildings (net) 369,000 450,000 Equipment (net) 237,000 288,000 Total $874,000 $1,064,000 Accounts payable $ 83,000 $ 83,000 Note payable 180,000 180,000 Common stock, $2 par value 153,000 Other contributed capital 229,000 Retained earnings 229,000 Total $874,000 As part of the negotiations, Pham Company agreed to pay the former stockholders of Senn Company $200,000 cash if the postcombination earnings of the combined company (Pham) reached certain levels during 2019 and 2020. The fair value of contingent consideration was estimated to be $100,000 on the date of acquisition. R B. During 2019, the likelihood of meeting the post combination earnings goal increased. As a result, at the end of 2019, the estimated fair value of the contingent consideration increased to $120,000. Prepare any journal entry needed to account for the change in the fair value of contingent consideration. C. During 2020, the likelihood of meeting the post combination earnings goal significantly decreased and the contingent consideration target was not met. Prepare any journal entry needed to account for the change in the fair value of contingent consideration