What Concern Does Methane Gas Production Create for the Operation

Multiple Choice

What concern does methane gas production create for the operation of a sanitary landfill?

A) may take up space in the landfill that could be better used for solid waste
B) may delay the decomposition of biodegradable garbage
C) may collect in tanks for use in generating electricity
D) may accumulate in underground pockets, creating the possibility of an explosion
E) may seep through cracks in lining of landfill contaminating groundwater