Sjostrom Corporation has provided the following contribution format income statement. Assume that the following information is within the relevant range. If the following changes happen: - selling price increases by $3 per unit - sales volume decreases by 600 units, the net operating income would: If the following changes happen: - selling price increases by $3 per unit - sales volume decreases by 600 units, the net operating income would: increase by $32,000 increase by $21,000 increase by $10,800 increase by $5,200