During the month of May, Starlight Concerts Company sells season passes to concertgoers that allow the ticket holder to attend all the concerts at the venue during the summer $($June$$August$).$ In May, the company sold $$12,000$ in summer season passes. The company offers an equal amount of concerts each month between June and August. At the end of June, which of the following adjusting entries should the company record?

a$.$ Debit Cash for $$4,000$ and credit Ticket Revenue for $$4,000$

b$.$ Debit Ticket Revenue for $$4,000$ and credit Unearned Ticket Revenue for $$4,000$

c$.$ Debit Unearned Ticket Revenue for $$4,000$ and credit Ticket Revenue for $$4,000$

d$.$ Debit Cash for $$12,000$ and credit Ticket Revenue for $$12,000$