Zofia's dermatologist has recommended a drug called Accutane for her acne. Accutane has potentially serious detrimental effects on a fetus, so Zofia is required to have a pregnancy test both before she begins treatment and every month that she takes the medication. In this situation, Accutane would act as a/an _____ on an unborn child.
A) proximodistal
B) teratogen
C) cephalocaudal
D) androgen