Claire is one month pregnant and consults with her doctor about the different categories of teratogens.The doctor tells her that all of the following are categories of teratogens EXCEPT:

A) drugs.
B) pollutants.
C) immunizations.
D) viruses.

Teratogens

Agents, such as chemicals or viruses, that can cause developmental abnormalities in a fetus.

Immunizations

The process by which individuals are made immune or resistant to an infectious disease, typically by the administration of a vaccine.