On August $1,$ Blossom Consulting Group collected $$7980$ on a $6-$month contract to provide SEO services to Sheridan, Inc. Assuming that the amount is earned equally over the $6$ months and that Blossom prepares financial statements monthly, the company's August $31$ adjusting entry will include

a debit to Cash and a credit to Service Revenue for $$6650.$

a debit to Cash and a credit to Unearned Revenue for $$1330.$

a debit to Accounts Receivable and a credit to Unearned Revenue for $$1330.$

a debit to Unearned Revenue and a credit to Service Revenue for $$1330.$