can someone please explain to me the purposes of these accounts? I'm just confused as to when you need to credit or debit these type of accounts and what their normal balances are. Thank you.

The balances in the variable overhead allocated account and the variable overhead control account are $120,000 and $125,000 respectively. The variable overhead spending variance is $7,000 and the variable overhead efficiency variance is $12,000. Which of the following entries would be required to record the variances in a standard costing system? O A. Work-in - Process $5,000 Variable Overhead Spending $7,000 Variable Overhead Efficiency Variance $12,000 OB. Variable Overhead Control $120,000 Variable Overhead Spending Variance $12,000 Variable Overhead Efficiency Variance $7,000 Variable Overhead Allocated $125,000 O C. Cost of Goods Sold $5,000 Variable Overhead Spending $7,000 Variable Overhead Efficiency Variance $12,000 OD. Variable Overhead Allocated $120,000 Variable Overhead Spending Variance $12,000 Variable Overhead Efficiency Variance $7,000 Variable Overhead Control $125,000