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 Plan A Debt 5.0% 20% Preferred stock 10.0 10 Common equity 14.0 70 Plan B Debt 5.2% 30% Preferred stock 10.2 10 Common equity 15.0 60 Plan C Debt 6.0% 40% Preferred stock 18.7 10 Common equity 11.5 50 Plan D Debt 16.0% 50% Preferred stock 19.4 Common equity 13.6 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.) Weighted Cost Plan A % Plan B % Plan C % Plan D % a-2. Which of the four plans has the lowest weighted average cost of capital? Plan A Plan B Plan C Plan D b. What is the relationship between the various types of financing costs and the debt-to-equity ratio? All types of financing costs increase as the debt-to-equity ratio increases. All types of financing costs decrease as the debt-to-equity ratio increases.