The piston is taken completely out of the cylinder. The hole at the top is sealed. Awater tank is brought below the cylinder and put in a position so that the water surface in the tank is at the same level as the top of the cylinder as shown in the figure. Thedensity of the water is ρ. In equilibrium, the height H of the water column in thecylinder satisfies

• A. ρg(L0−H)2 + P0(L0 − H) + L0P0 = 0
• B. ρg(L0−H)2 − P0(L0 − H) − L0P0 = 0
• C. ρg(L0−H)2 + P0(L0 − H) − L0P0 = 0
• D. ρg(L0−H)2 − P0(L0 − H) + L0P0 = 0