The vessel shown in the figure has two sections. The lower part is a rectangular vessel with area of cross-section $A$ and height $h$. The upper part is a conical vessel of height $h$ with base area $A$ and top area $a$,and the walls of the vessel are inclined at an angle $30^o$ with the vertical. $A$ liquid of density $\rho$ fills both the sections up to a height $2h$. Neglecting atmospheric pressure:

• A
  The force $F$ exerted by the liquid on the base of the vessel is $2h\rho gA$.
• B
  The pressure $P$ at the base of the vessel is $2h\rho g$.
• C
  The weight of the liquid $W$ is greater than the force exerted by the liquid on the base.
• D
  The walls of the vessel exert a downward force $(F-W)$ on the liquid.