Back Mountain Industries (BMI) has two divisions: East and West. BMI has a cost of capital of 20 percent. Selected financial information (in thousands of dollars) for the first year of business follows: East Sales revenue Income Investment (beginning of year) Current liabilities (beginning of year) R&D expendituresa $2,600 760 5,200 360 1,300 West $8,200 870 6,200 360 1,200 R&D is assumed to benefit two periods. All R&D is spent at the beginning of the year. Required: a-1. Evaluate the performance of the two divisions assuming BMI uses residual income. (Enter answers in thousands of dollars. Negative amounts should be indicated by a minus sign.) Divisions Residual Income East West a-2. Which division had the better performance