Which weighted average cost of capital measure $($WACC$)$ is used for the dividend discount model $($DDM$,$ the one created at the beginning of the semester$)$ and for the discounted cash flow model $($DCF$,$the one used for the semester project$)?$

A$.$

Both models use the total WACC

B$.$

The DDM model uses the total WACC and the DCF model uses the equity WACC

C$.$

Both models use the equity WACC

D$.$

The DDM model uses the equity WACC while the DCF model uses the total WACC.