5. At the beginning of the year, Estes Company estimated the following cost: Overhead- --$450,000 Direct labor cost -900,000 Estes uses normal costing and applies on the basis of direct labor cost. (Direct labor cost is equal total labor hours worked multiplied by the wage rate.). For the month of November and December direct labor cost was $50,500 and $60,600 respectively. Required: a. Calculate the predetermined overhead rate for the year b. Calculate the overhead applied to November production c. Calculate the overhead applied to December production d. Calculate the variance in December production