On November 1, 2018, XYZ Company received $1,800 from a customer for services to be provided over the next six months, Assume that XYZ Company made the appropriate journal entry on November 1, 2018, and no adjusting entries have been made during the year. Which of the following is the appropriate adjusting Journal entry to be recorded on December 31, 2018? DR Unearned Revenue $1,200 CR Service Revenue $1.200 DR Unearned Revenue $1,800 CR Service Revenue $1,800 DR Service Revenue $1,200 CR Unearned Revenue $1.200 DR Service Revenue $600 CR Unearned Revenue 5600 DR Service Revenue $1.800 CR Unearned Revenue $1,800 DR Unearned Revenue $600 CR Service Revenue $600 NO ADJUSTING ENTRY NECESSARY