The Omega Corporation has some excess cash it would like to invest in marketable securities for a long-term hold. Its Vice-President of Finance is considering three Investments: (a) Treasury bonds at a 6 percent yleld; (b) corporate bonds at a 11 percent yleld; or (0) preferred stock at an 8 percent yleld. Omega Corporation is in a 40 percent tax bracket and the tax rate on dividends is 10 percent. a-1. Compute the aftertax ylelds for the three Investment options. (Do not round Intermediate calculations. Input your answers as a percent rounded to 2 decimal places.) Aftertax yields a. Treasury bonds b. Corporate bonds c. Preferred stock a-2. Which one of the three Investments should she select based on the aftertax ylelds? O Preferred stock Treasury bonds O Corporate bond