Budgeted overhead for Cinnabar Industries at normal capacity of 30,000 direct labor hours is $6 per hour variable and $4 per hour fixed. In May, $310,000 of overhead was incurred in working 31,500 hours when 32,000 standard hours were allowed. The overhead volume variance is $8,000 favorable. $11,000 favorable. $5,000 favorable. $10,000 favorable