The balance in the prepaid rent account before adjustment at the end of the year is $11,640, which represents four months' rent paid on December 1 . The adjusting entry required on December' 31 is b. debit Rent Expenve, $8,730, credir Propaid Reit, $2,910 c. debit Ment Bupctae, $2910, credit Prepaid Renc, $2,910 d. debal Prepaid Rent, \$2,910, crodit Reet Expenve, \$2,910