To Act as an Effective Coolant in a Car's Radiator

To act as an effective coolant in a car's radiator, a substance has to have the capacity to absorb a great deal of heat. You have a reference book with tables listing the physical properties of many liquids. In choosing a coolant for your car, which table would you check first?

A) pH
B) density at room temperature
C) heat of vaporisation
D) specific heat