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. $$\frac{{3{\text{H}}}}{4}$$
Answer: Option C

Pressure prism center from apex