Klien's inc uses machine-hours as the base to apply manufacturing overhead.
The variable manufacturing overhead standard rate per machine hour is $50.
Total standard machine hours allowed for units produced during september were 4,000.
Hien's variable overhead rate variance for september was $800 favorable. It's variable overhead efficiency variance was $3,600 favorable.
How many machine hours did Hien actually use during September?
A. 3928B. 3944C. 4056D. 4072
