Regarding Environmental Influences and Congenital Problems, Which of the Following

Multiple Choice

Regarding environmental influences and congenital problems, which of the following statements is FALSE?

A) ​Many environmental factors can influence epigenesis, and hence maturation.
B) ​Congenital problems are environmental problems that affect the developing fetus and become apparent at birth.
C) ​Albinism, sickle cell anemia, and cystic fibrosis are examples of birth defects.
D) ​No direct intermixing of blood takes place between a mother and her unborn child.