Figure shown schematic plan of blood circulation in humans

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Figure shown schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function’s.

1. B-Pulmonary artery-takes blood from heart to lungs, PO₂ = 90 mm Hg
2. C-Vena Cava - takes blood from body parts to right auricle, PCO₂ = 45 mm Hg
3. D - Dorsal aorta - takes blood from Heart to body Part PO₂ = 95 mm Hg
4. A-Pulmonary vein - takes impure blood from body parts, PO₂ = 60 mm Hg

Correct Option: B

A is pulmonary vein which takes pure blood from lungs to heart. B is dorsal aorta which takes pure blood from heart to various body parts. C is vena cava which takes impure blood from various body pars to right auricle of the heart. D is pulmonary artery which takes impure blood from heart to lungs.