Study the cash flow of Project $Y$ and Project $Z$ in the table below. What is the total discounted cash flow of Project $Y$ and Project $Z?($Assume a discount rate of $8\%).$

$\backslash$table$[[$Year$,$Project Y$,$Project Z$],[0,-$ R$200000,00,-$R$275000,00],[1,$R$85000,00,$R$70000,00],[2,$R$70000,00,$R$75000,00],[3,$R$78000,00,$R$80000,00],[4,$R$33000,00,$R$85000,00]]$

a$.$ R$24892,62$ and $-$R$19900,66$

b$.$ R$200000,00$ and R$275000,00$

c$.$ R$275000,00$ and R$200000,00$

d$.$ R$224892,32$ and R$255099,34$