What does teratogenic refer to?

A. Endangering the elderly: Teratogenicity does not refer to endangering the elderly. It is related to effects on the fetus. B. Causing birth defects in the unborn fetus: Teratogenic substances are those that can cause birth defects when a pregnant woman is exposed to them. C. Cancer-causing: Substances that cause cancer are called carcinogens, not teratogens. D. Endangering the health of the mother: While some teratogens can also affect the mother, the term specifically refers to causing birth defects in the fetus.