Bismith Company Reported To Record the Write-Off of These Variances at the End

Bismith Company reported: $\begin{array}{ll}\text { Actual fixed overhead } & \$ 500,000 \\\text { Fixed manufacturing overhead spending variance } & \$ 30,000 \text { favorable }\\\text { Fixed manufacturing production-volume variance }& \$ 20,000 \text { unfavorable }\\\end{array}$ To record the write-off of these variances at the end of the accounting period,Bismith would ________.

A) credit Fixed Manufacturing Overhead Allocated for $500,000
B) debit Fixed Manufacturing Overhead Spending Variance for $30,000
C) credit Fixed Manufacturing Production-Volume Variance for $20,000
D) debit Fixed Manufacturing Control for $500,000