Problem $11-21($Algo$)$ Weighted average cost of capital $[$LO$11-1]$

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

$\backslash$table$[[\backslash$table$[[$Cost$],[($aftertax$)]],$Weights$],[$Plan A$,5\mathrm{.}0\%,20\%,,],[$Debt$,10\mathrm{.}0,10,,],[$Preferred stock,$14\mathrm{.}0,70,,],[$Common equity,,,,$],[$Plan B$,5\mathrm{.}2\%,30\%,,],[$Debt$,10\mathrm{.}2,10,,],[$Preferred stock,$15\mathrm{.}0,60,,],[$Common equity,,,,$],[$Plan C$,6\mathrm{.}0\%,40\%,,],[$Debt$,15\mathrm{.}7,10,,],[$Preferred stock,$11\mathrm{.}6,50,,],[$Common equity,,,,$],[$Plan D$,12\mathrm{.}0\%,50\%,,],[$Debt$,16\mathrm{.}6,10,,],[$Preferred stock,$13\mathrm{.}6,40,,],[$Common equity,,,,$]]$

a$-1.$ Compute the weighted average cost for four plans.

Note: Do not round intermediate calculations. Input your answers as a percent rounded to $2$ decimal places.

$\backslash$table$[[,$Weighted Cost$],[$Plan A$,,\%$