Sauer Milk Inc. wants to determine the minimum cost of capital point for the firm. Assume it is considering the following financial plans: 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.) 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