Assuming that the daily changes in a portfolio$$s value follow a normal distribution with a mean of zero and a standard deviation of R$6$ million, calculate the following: $(5)$

a$)$ Calculate the one$-$day $99\%$ Value at Risk $($VaR$).$

b$)$ Calculate the five$-$day $97\mathrm{.}5\%$ VaR.

c$)$ Calculate the five$-$day $99\%$ VaR.

d$)$ Which two parameters play a role in the calculation of VaR?