Callaway Golf's return on equity (ROE) was 11.4% in 2001 and 13.1% in 2002. The increase in this ratio could be caused by which of the following? Answer A. An increase in net profit margin. B. A decrease in the asset turnover ratio. C. An increase in the relative portion of stockholders' equity to fund assets. D. Both A and C would cause ROE to increase. E. All of the above would cause ROE to increase