$3-$ A hotel has three sections called intemational passengers, local passengers and general services. Each department has $25$ personnel plus $5$ additional general services providers like receptions, accountants, efc.$).$ In order to analyze behavior of this hotel and in order for improving its quality of services and consequently enhancing profitability index, we have developed a simulation model. $(15$ points$)$

A$-$ In input analysis, skewness index is equal to $-0\mathrm{.}66.$ What does it mean?

B$.$ Affer running $1000$ epochs, the error amount $($according to average waiting times$)$ is less than $1\%.$ What do you suggest? Is it needed to continue?

C$-$ Which policy$/$scenario do you recommend to simulate in order to optimize the performance and profitability of this hotel?