One of the functions of the lymphatic system is to pick up excess interstitial fluid and return it to venous blood.This process

A) occurs only when blood capillaries are not functioning properly
B) helps to maintain normal blood volume and prevent edema
C) occurs only in the lower extremities where blood tends to pool and plasma leaks out of the capillaries
D) keeps a normal electrolyte balance in the interstitial fluid
E) allows blood to be cleansed by phagocytic cells in the lymphatic system