A tube contains a volume of water and a volume of mercury as shown in the figure above. Both ends of the tube are open. Points \(A\) and \(B\) are at the same level and points \(C\) and \(D\) are at the same level. The distance between points \(A\) and \(B\) and the surface of the liquids are shown. Which of the following correctly relates the gauge pressures at the points shown? The density of the water is \(1{,}000\,\text{kg/m}^3\) and the density of the mercury is \(13{,}600\,\text{kg/m}^3\).