Which of the followg statements regarding a firm's Return on Equity (ROE) is least socurato? A. ROE is a product of the tax burden, the interest burden, the EBIT margin, the asset tumover, and the leverage. B. An increase in ROE is always a positive sign for the firm, C. ROE is a product of the net profit margin, the asset turnover, and the equity multipler. D. It may not always be easy to compare ROE for the same firm over time if accounting methods have changed. E. As we discussed in the case of 'Ackman vs. Targer', the DuPont analysis is a way to decompose ROE, to better see what changes are driving the changes in ROE