Only One of the Following Accurately Describes a Characteristic of Home

Only one of the following accurately describes a characteristic of home water treatments, which one is it?

A) Activated carbon filters are effective in removing chlorine.
B) Most home filtration systems are highly efficient at removing virtually all types of contaminants.
C) Boiling the water is effective at removing all organic chemicals as well as killing microorganisms.
D) Most home filtration systems combine the processes of heavy metal removal, killing of microorganisms, softening of the water, and addition of enhancers.