Rivard Company records $35,000 in the unearned revenue account during the year. The ending balance of unearned revenue is determined to be $18,500 The adjusting entry involves a: Select one: O a. debit to service revenue for $18,500 O b. debit to service revenue for $16,500 O c. credit to service revenue for $16,500 O d. credit to service revenue for $18,500 O e. credit to unearned revenue for $18,500