Please select the explanation for why the members of the bacterial family Enterobacteriaceae are commonly pathogenic to humans.
A) This family of bacteria commonly inhabits the human body as normal flora.
B) Animals have these bacteria as normal flora, and since humans and animals are in close contact, the bacteria are easily transmitted to humans.
C) Humans contact these bacteria easily from soil.
D) Humans have no inherited resistance to these bacteria.
E) As air contaminants, these bacteria easily are transmitted by respiratory route.
A) This family of bacteria commonly inhabits the human body as normal flora.
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