Flagg, inc. records adjusting entries at its december 31 year end. at december 31, employees had earned $12,000 of unpaid and unrecorded salaries. the next payday is january 3, at which time $30,000 will be paid. prepare the january 1 journal entry to reverse the effect of the december 31 salary expense accrual. a. debit salaries expense $12,000; credit salaries payable $12,000. b. debit salaries expense $18,000; debit salaries payable $12,000; credit cash $30,000. c. debit salaries payable $18,000; credit cash $18,000. d. debit salaries payable $12,000; credit salaries expense $12,000. e. debit salaries expense $18,000; credit salaries payable $18,000.