4) Budgeted fixed manufacturing overhead = $500,000. Actual production = 40,000 unit. Each unit budgeted to take 0.5 machine-hour to produce. Budgeted fixed manufacturing overhead rate per machine hour =$22. What is the production volume variance for fixed manufacturing overhead? a) $60,000 unfavorable b) $60,000 favorable c) 0 d) $1,500,000 favorable