The lymph serves to
(a) return the interstitial fluid to the blood
(b) return the WBCs and RBCs to the lymph nodes
(c) transport CO2 to the lungs
(d) transport O2 to the brain
(a) return the interstitial fluid to the blood
(b) return the WBCs and RBCs to the lymph nodes
(c) transport CO2 to the lungs
(d) transport O2 to the brain