Calculate the weighted average cost of capital (WACC) for Riley's Rocket Pops given the following information:

Capital Component	Percentage of Total Capital	Cost of Capital
Common Stock	40%	16%
Preferred Stock	20%	10%
Long-Term Debt	40%	5%, after-tax (tax rate = 25%)

(I posted this before and the answer given to me was wrong it is not 9.90% or 3.75% can someone else try helping me solve this?)