17) 17) At the end of the accounting period Bumsted Corporation reports operating income of $30,000 and the fixed overhead cost rate is $20 per unit. Under variable costing, if this company produces 100 more units of inventory, then operating income: A) will increase by $2,000 only if the 100 additional units of inventory are sold B) will not be affected C) is indeterminable D) will increase by $2,000