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		8.0	%		25	%
Preferred stock		16.0			15
Common equity		20.0			60
Plan B
Debt		8.8	%		35	%
Preferred stock		16.8			15
Common equity		20.0			50
Plan C
Debt		9.0	%		45	%
Preferred stock		15.7			15
Common equity		10.5			40
Plan D
Debt		13.0	%		55	%
Preferred stock		16.4			15
Common equity		12.8			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.)