Lopez Company Received $6,400 on April 1, 2008 for One

Lopez Company received $6,400 on April 1, 2008 for one year's rent in advance and recorded the transaction with a credit to a nominal account. The December 31, 2008 adjusting entry is

A) debit Rent Revenue and credit Unearned Rent, $1,600.
B) debit Rent Revenue and credit Unearned Rent, $4,800.
C) debit Unearned Rent and credit Rent Revenue, $1,600.
D) debit Unearned Rent and credit Rent Revenue, $4,800.