Equal mass of three liquids are kept in three identical cylindrical vessels A,B and C. The densities are ${\rho }_{\text{A}},{\rho }_{\text{B}},{\rho }_{\text{C}}$ with ${\rho }_{\text{A}}<{\rho }_{\text{B}}<{\rho }_{\text{C}}$  . The force on the base will be