The compaction curve, A$,$ shown below has an optimum water content of $21\mathrm{.}5k\frac{N}{m}3$ and is being used as the design basis for an earthworks project.

The contractor on the project is required to achieve a degree of compaction of at least $90\%$ and has different types of equipment that can apply different amounts of compactive effort. The contractor's equipment produces unique compaction conditions represented by curves $B,C,$ and $D$ below.

You required to identify:

The compaction curve for the most cost effective compactive effort if the contractor in each case will compact just dry of optimum. Drag the drag item labelled $("$$$$")$ to the correct grey box below which identifies the appropriate compaction curve.

The Upper Limit $($UL$)$ and the Lower Limit $($LL$)$ of the most cost effective water content range by dragging the relevant drag items into the correct blue boxes that label the water contents below.

$**$NOTE: Make sure the cross$-$hairs $($top left of the drag item$)$ is fit into the centre of the boxes provided when choosing your answer.