Which of the Following Is True of the Placenta

Multiple Choice

Which of the following is true of the placenta?

A) The placenta does not allow alcohol to pass through to the fetus.
B) The placenta exposes the fetus to maternal red blood cells.
C) The transfer of carbon dioxide and oxygen across the placenta is highly regulated.
D) When nutrient supply is low, the placenta supplies the fetus with the required nutrients before fulfilling its own requirements.
E) The placenta develops from embryonic tissue and is larger than the fetus for most of pregnancy.