The Missoula Dental Group had patients on December 31, 2020 and generated $4,500 in revenue on that day. As of their year-end on December 31, 2020, no entry was recorded yet to bill the patients and the patients had not made any payments to the Dental Group during their visit. The adjusting journal entry at year-end would include which of the following: b Debit to Unearned Revenue for $4,500 Credit to Accounts Payable $4,500 Credit to Service Revenue for $4,500 Debit to Cash for $4,500 None of the above