Maternal Blood Volume Increases During Pregnancy Because

Multiple Choice

Maternal blood volume increases during pregnancy because

A) hypoxia resulting from fetal demand for oxygen stimulates release of erythropoietin.
B) decreased peripheral blood volume due to circulation in the placenta leads to the release of rennin.
C) increased aldosterone secretion promotes salt and water retention at the kidneys.
D) decreased venous return due to blood volume diverted to the placenta triggers a compensating mechanism.
E) all of the above