In the four cases $($A$,$ B$,$ C and D$),$ the concentrations of solute $x$ in four one liter Tme etconor compartments $($Compartment $1)$ are separated from four other one liter compartments $($Compartment $2)$ by a membrane through which $x$ can diffuse are shown in the table below. Based on those data, complete the following sentence by stating the situation $($Case A$,$ Case B$,$ Case C$,$ or Case D$)$ which makes the sentence correct.

"Net movement of X will be greatest in $68.[$blank $1]$

Concentration of $x,mM$