Question

3 Urea is made in the liver and is transported in the blood plasma for removal by the kidneys.
Which sequence of blood vessels is the shortest correct route for these urea molecules?
A hepatic artery → pulmonary artery → aorta → renal artery
B hepatic vein → pulmonary artery → pulmonary vein → renal artery
C hepatic vein → pulmonary vein → pulmonary artery → renal artery
D renal vein → vena cava → aorta → hepatic artery