The figure given below shows a schematic plan of blood circulation in humans with labels (i) to (iv). Identify the correct label with its functions?
A. (i) Pulmonary vein - takes impure blood from body part.
B. (ii) Pulmonary artery - takes blood from lung to heart.
C. (iii) Aorta - takes blood from heart to body parts.
D. (iv) Vena cava takes - blood from body parts to right auricle.