Which liquid out of kerosene, pine oil and ${\mathrm{CCl}}_4$ has maximum relative density? (Density of kerosene$=800 \mathrm{kg} {\mathrm{m}}^{-3}$,  the density of pine oil $=875 \mathrm{kg} {\mathrm{m}}^{-3}$  and density of ${\mathrm{CCl}}_4=1594 \mathrm{kg} {\mathrm{m}}^{-3}$)