Copr. Goedl Astore, Inc. reported the following financial data for the most recent year end. Sales, $$210,000$; operating expenses $$180,000$; average operating assets, $$200,000$; total liabilities, $$65,000.$

The company is considering investing in a new machine that would cost $$30,000.$ The machine should generate an additional $$21,000$ in sales revenue and cost approximately $$12,300$ to operate.

The company's minimum required rate of return is $14\%.$

What is the residual income for the new machine?

$$4,500$

$$8,700$

$$4,200$

$$2,000$