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 $15 000,which represents three months' rent paid on May 1.The adjusting entry required on June 30 is:
$\begin{array}{llll}A. \text { DR Rent expense } & \$ 10000 & \text { CR Prepald rent } & \$ 10000 \\B. \text { DR Rent expense } & \$ 5000 & \text { CR Prepaid rent } & \$ 5000 \\C. \text { DR Prepaid rent } & \$ 10000 & \text { CR Rent expense } & \$ 10000 \\D.\text { DR Prepaid rent } & \$ 5000 & \text { CR Rent expense } & \$ 5000\end{array}$