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 7.00 14.0 18.0 158 10 75 7.55 14.5 19.0 258 10 65 Plan A Debt Preferred stock Common equity Plan B Debt Preferred stock Common equity Planc Debt Preferred stock Common equity Plan D Debt Preferred stock Common equity 8.00 21.7 15.8 356 10 55 15.08 22.2 17.5 458 10 45 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 Plan B Planc Weighted Cost % % % Plan D % a-2. Which of the four plans has the lowest weighted average cost of capital? O Plan D O Plan B O Plan C O Plan A