The Balance in the Prepaid Rent Account Before Adjustment at the End

The balance in the prepaid rent account before adjustment at the end of the year is $24,000, which represents four months' rent paid on December 1. The adjusting entry required on December 31 is

A) debit Rent Expense, $6,000; credit Prepaid Rent, $6,000
B) debit Prepaid Rent, $18,000; credit Rent Expense, $6,000
C) debit Rent Expense, $18,000; credit Prepaid Rent, $6,000
D) debit Prepaid Rent, $6,000; credit Rent Expense, $6,000