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: (d) Treasury bonids at a 6 percent yield; (b) corporate bonds at a 13 percent yield: or (c) preferred stock at an 7 percent yieid. Omega Corporation is in a 40 percent tax bracket and the tax rate on dividends is 10 percent. a-1. Compute the aftertax yields for the three investment options. Note: Do not round intermediate calculations. Input your answers as a percent rounded to 2 decimal places. 0.2. Which one of the three investments should she select based on the aftertaxyieids