The balance in the prepaid rent account before adjustment at the end of the year is $13,968, which represents 12 months' rent paid on December 1. The adjusting entry required on December 31 is

a.debit Prepaid Rent, $12,804, credit Rent Expense, $1,164

b.debit Prepaid Rent, $1,164, credit Rent Expense, $1,164

c.debit Rent Expense, $1,164, credit Prepaid Rent, $1,164

d.debit Rent Expense, $12,804, credit Prepaid Rent, $1,164