Piston X is forced into a hydraulic cylinder. As a result, piston X creates a pressure $P_X$ in the liquid inside the cylinder. The diagram is a view of the cylinder from above. Two further pistons, Y and Z, are present in the cylinder. The pressures acting on piston Y and on piston Z are $P_Y$ and $P_Z$. What relationship links $P_X$, $P_Y$ and $P_Z$?
- A$P_X = P_Y + P_Z$
- B$P_X > P_Z > P_Y$
- C$P_X < P_Z < P_Y$
- D$P_X = P_Y = P_Z$