Left auricle receives pure blood from the:
- Apulmonary veins
- Bpulmonary artery
- Csuperior vena cava
- Dinferior vena cava
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In birds and mammals,the oxygenated blood is received by ...$A$... and deoxygenated blood is received by ...$B$.... The ventricles pump it out without any mixing of oxygenated and deoxygenated blood. Choose the correct option for $A$ and $B$.
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