The correct answer is Sewa diterima dimuka Rp 9.000.000,00 (D), Pendapatan Sewa Rp 9.000.000,00 (K). This is because the account "Sewa diterima dimuka" shows a balance of Rp 12.000.000,00 on December 31, 2012, and the rental income for 2012 is Rp 9.000.000,00. To adjust the accounts, the amount of rental income received in advance should be decreased by Rp 9.000.000,00 (debit) and the rental income should be increased by the same amount (credit).