How sensitive is return on capital to the forecast assumptions in case Exhibit 8? What independent changes in Carrie Galeotafiore's estimates are required to drive the 2002 return-on-capital estimate below Home Depot's cost-of-capital estimate of 12.3% Look specifically at gross margin, cash operating expenses, receivable turnover, inventory turnover, and P&E turnover. What effect does sales growth have on return on capital? Explain your findings.