One year ago, Jennifer and David Davis made several large-cap stock investments. They used no margin, and their trading costs were $9 per transaction. Their purchases included the following: 100 shares of Stock A at $30 (annual dividend, $0.17) 100 shares of Stock B at $36 (annual dividend, $0.66) 100 shares of Stock Cat $40 (annual dividend, $0.50) 100 shares of Stock D at $15 (no dividend) The current stock prices are as follows: Stock A, $33; Stock B, $34; Stock C, $41; and Stock D, $18