Material for an earth fill was available from three different borrow sites. In the compacted state the fill measured $100,000m^3$ at a void ratio of $0\mathrm{.}70.$ The corresponding in$-$situ void and cost $($material and transportation$)$ of the material for the three sites is as follows:

$\backslash$table$[[$Borrow Site,Void Ratio,Total Cost $\frac{?}{m^3}($AED$)],[1,0\mathrm{.}8,23\mathrm{.}56],[2,1\mathrm{.}7,22\mathrm{.}1],[3,1\mathrm{.}2,18\mathrm{.}95]]$

Make the necessary calculations to select the pit from which the soil should be bought to minimize the cost.