Gold Fields is building a $40$MW solar power plant at its South Deep gold mine at a cost of R$660$ million, including contingencies and escalation.

To raise the required total project cost, Gold Fields has a structured project finance comprising of $60\%$ equity and $40\%$ debt. Given a cost of equity of $10\%$ and a cost of debt of $6\%$;

What is the debt value of the investment.

$$A$)$ R$264$ Million

B$)$R$369$ Million

$$C$)$ R$396$ Million

$$D$)$ R$246$ Million