Fragmental Co. leased a portion of its store to another company for eight months beginning on October 1, at a monthly rate of $1,100. Fragmental collected the entire $8,800 cash on October 1 and recorded it as unearned revenue. Assuming adjusting entries are only made at year-end, the adjusting entry made by Fragmental Co. on December 31 would be:

A debit to Cash and a credit to Rent Revenue for $8,800.

A debit to Unearned Rent and a credit to Rent Revenue for $3,300.

A debit to Unearned Rent and a credit to Rent Revenue for $5,500.

A debit to Rent Revenue and a credit to Unearned Rent for $3,300.

A debit to Rent Revenue and a credit to Cash for $3,300.