Which of the Following Is a Disadvantage of Landfills

Which of the following is a disadvantage of landfills?

A) Only a limited number of sites are available for making landfills near urban and suburban areas.
B) Methane gas that is produced in landfills as the organic waste material anaerobically decomposes must be removed.
C) Pollutants such as heavy metals and pesticides frequently leak from landfill sites, reaching underground aquifers and contaminating drinking water.
D) Methane gas that is produced in landfills as the organic waste material anaerobically decomposes must be removed AND only a limited number of sites are available for making landfills near urban and suburban areas.
E) Pollutants such as heavy metals and pesticides frequently leak from landfill sites, reaching underground aquifers and contaminating drinking water, AND only a limited number of sites are available for making landfills near urban and suburban areas.