Tannin Bus Co. sold 8,000 tickets on 1/5/2020 at $20 each for four-month period from 1/5/2020 to 31/8/2020. The adjusting entry on 31/5/2020 is: O a Dr. Ticket revenue 40,000 and Cr, unearned revenue 40,000 b. Dr. Ticket revenue 120,000 and Cr, unearned revenue 120,000 Oc. Dr. Unearned Ticket revenue 40,000 and Cr. Ticket revenue 40,000 Od Dr. Unearned Ticket revenue 120,000 and Cr. Ticket revenue 120,000