I need help to understand this question for others I have to do. If you could show your work that would be great. Thank you in advance!

On April 1, 2019, Orbit Services received $10,800 in advance of performing the services from a customer for three months of service - April, May and June. What would be the journal entry to adjust the accounts at the end of May? (Do not round any intermediate calculations, and round your final answer to the nearest dollar.) O A. Debit Service Revenue $7,200, and credit Accounts Receivable $7,200. O B. Debit Unearned Revenue $10,800, and credit Service Revenue $10,800. O C. Debit Unearned Revenue $7,200, and credit Service Revenue $7,200. O D. Debit Service Revenue $3,600, and credit Unearned Revenue $3,600