Problem 11-21 Weighted average cost of capital (LO11-1) Sauer Milk Inc. wants to determine the minimum cost of capital point for the firm. Assume it is considering the following financial plans: Cost (aftertax) Weights 7.0% 14.0 18.0 20% 10 70 7.2% 14.2 19.0 30% 10 60 Plan A Debt Preferred stock Common equity Plan B Debt Preferred stock Common equity Plan C Debt Preferred stock Common equity Plan D Debt Preferred stock Common equity 8.0% 13.7 15.9 40% 10 50 12.0% 14.6 16.8 50% 10 40 a-1. Compute the weighted average cost for four plans. (Do not round intermediate calculations. Input your answers as a percent rounded to 2 decimal places.) Plan A Weighted Cost % % Plan B Plan C % Plan D % a-2. Which of the four plans has the lowest weighted average cost of capital? O Plan A Plan B Plan C O Plan D