If A is the area of the surface, $$\overline {\text{x}} $$ is the depth of its C.G. from the surface of the water and $$\omega $$ is the density of water, then

A. Total pressure on the surface is equal to $$\omega \overline {\text{x}} $$

B. Depth of the point at which total pressure acts is equal to its moment of inertia divided by $${\text{A}}\overline {\text{x}} $$

C. Depth of the centre of pressure is $$\frac{2}{3}{\text{H}}\,$$ vertically below the surface

D. All the above

Answer: Option D