Biofilm Infections Are Harder to Treat Than the Same Free-Living

Biofilm infections are harder to treat than the same free-living organisms because ________.

A) when part of a biofilm community,the bacterial cells express different genes thus changing their antibiotic susceptibility
B) bacteria in a biofilm exist only on synthetic surfaces such as catheters,so they cannot be treated with antibiotics
C) the organisms in the biofilm degrade the antibiotics at a much faster rate than their free-living counterparts
D) organisms in a biofilm develop antibiotic resistance more rapidly than free-living cells