Trevor Company has the following adjusted trial balance at December 31, 2019: Credit Account Cash Accounts Receivable Inventory Supplies Prepaid Rent Land Building Accumulated DepreciationBuilding Accounts Payable Debit $1,100 1,000 2,000 1,700 400 5,600 40,900 $9,000 7,900 7,900 3,800 1,900 6,900 2,600 800 Accounts Payable Unearned Revenue Notes Payable, due 2020 Common Stock Retained Earnings Dividends Service Revenue Rent Expense Supplies Expense Salaries Expense Depreciation Expense-Building Utilities Expense Totals 33,000 1,100 1,200 6,100 1,600 1,600 $65,100 $65,100 1,900 6,900 2,600 800 33,000 Notes Payable, due 2020 Common Stock Retained Earnings Dividends Service Revenue Rent Expense Supplies Expense Salaries Expense Depreciation Expense Building Utilities Expense Totals 1,100 1,200 6,100 1,600 1,600 $65,100 $65,100 What is the Retained Earnings balance at December 31, 2019? A. $23,200 OB. $20.600 OC. $21,400 O D. $24.000