4. An unfavorable change in business is remotely possible; in this case, production and sales volume for 2017 could fall to 12,000 units. How much income (or loss) from operations would occur if sales volume falls to this level? (Enter any loss with minus sign.) Forecasted Contribution Margin Income Statement Sales (in units) YearEnded December31, 2017 15,000 12,000 Contribution margin (per unit) Contribution margin Fixed costs Operating income (loss)