Smart Corporation is a manufacturer of smartphones. Assume Smart allocates manufacturing overhead based on machine hours. Additional information for Smart is as follows: Budgeted 5 million machine hours and $50 million of manufacturing overhead costs Actual machine hours of 6 million Actual total manufacturing overhead costs of $48 million What is Smart's predetermined manufacturing overhead rate? A. S 8.00/machine hour B. $ 9.60/machine hour C. $ 8.33/machine hour D. $10.00/machine hour