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 20% 5.0% 10.0 14.0 70 30% 5.2% 10.2 10 15.0 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 40% 6.0% 15.7 11.6 50 50% 12.0% 16.6 10 13.6 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.) Weighted Cost Plan A 11.80 % Plan B Plan C Plan De a-2. Which of the four plans has the lowest weighted average cost of capital? Plan A Plan B Plan C Plan D