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		6.0	%		25	%
Preferred stock		12.0			15
Common equity		16.0			60
Plan B
Debt		6.6	%		35	%
Preferred stock		12.6			15
Common equity		17.0			50
Plan C
Debt		7.0	%		45	%
Preferred stock		19.7			15
Common equity		15.5			40
Plan D
Debt		17.0	%		55	%
Preferred stock		20.4			15
Common equity		17.6			30

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?
  

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