The Thomlin Company forecasts that total overhead for the current year will be $15,000,000 and that total machine hours will be 200,000 hours. Year to date, the actual overhead is $15,500,000 and the actual machine hours are 220,000 hours. If the Thomlin Company uses a predetermined overhead rate based on machine hours for applying overhead, what is that overhead rate? a. $71 per machine hour b. $78 per machine hour c. $68 per machine hour d. $75 per machine hour