A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.
A
$$\frac{{\text{H}}}{3}$$
B
$$\frac{{\text{H}}}{2}$$
C
$$\frac{{2{\text{H}}}}{3}$$
D
$$\frac{{3{\text{H}}}}{4}$$
Correct Answer: $$\frac{{2{\text{H}}}}{3}$$