Cheyenne Corp.received a check for $21120 on July 1 which represents a 6 month advance payment of rent on a building it rents to a client. Unearned Rent Revenue was credited for the full $ 21120. Financial statements will be prepared on July 31. Cheyenne's should make the following adjusting entry on July 31: O debit Cash, $ 21120; credit Rent Revenue, $21120. O debit Rent Revenue, $3520, credit Unearned Rent Revenue, $ 3520. O debit Unearned Rent Revenue, $ 21120; credit Rent Revenue, $ 21120. O debit Unearned Rent Revenue, $3520; credit Rent Revenue, $ 3520