Manufacturing overhead costs totaling $5,000,000 are expected for this year. The company also expects to use $100,000 direct labor hours and 40,000 maxhine hours. Required: a. Calculate the plantwide predetermined overhead rate using direct labor hours as the base. Provide a brief description of how the rate will be used to allocate overhead costs to products. B. Calculate the plantqide predetermined overhead rate using machine hours as the base provide a brief description of how the rate will be used to allocate overhead costs to products