Answer:
actual quantity of the cost-allocation base used and the budgeted quantity of the cost-allocation base that should have been used to produce the actual output
Step-by-step explanation:
The formula to calculate the variable overhead efficiency variance is shown below:
= (Standard quantity - actual quantity) ÷ budgeted variable overhead cost per unit
In the case when the standard quantity is more than the actual one so it is favorable else unfavorable
Therefore the last option is correct
And, the other options are wrong