Billa Corporation bases its predetermined overhead rate on variable manufacturing overhead cost of $8.50 per machine-hour and fixed manufacturing overhead cost of $609,900 per period. If the denominator level of activity is 5,700 machine-hours, the predetermined overhead rate would be: (Round your intermediate calculations to 2 decimal places.) Multiple Choice O $8.50 0 $115.50 0 $107.00 0 $850.00