Bacteria and Viruses Share a Common Characteristic but Are Different

Bacteria and viruses share a common characteristic but are different from toxins. Which of the following explain that difference?

A) Toxins are poisonous and dangerous, while bacteria and viruses are normally safe when found in their natural environments.
B) Toxins are not considered living organisms, while bacteria and viruses are. Instead, toxins are non-living chemical substances produced as a by-product by living organisms.
C) Bacteria and viruses have a low specificity but toxins have a high specificity because most attack certain organs that only humans have.
D) Bacteria and viruses are found naturally occurring in the environment but toxins are synthetic.