Which vein brings clean blood from the lungs into the heart ? (a) renal vein (b) pulmonary vein (c) vena cava (d) hepatic vein

Which vein brings clean blood from the lungs into the heart ? (a) rena

1.	Which vein brings clean blood from the lungs into the heart ? (a) renal vein (b) pulmonary vein (c) vena cava (d) hepatic vein
Answer» Which vein brings clean blood from the lungs into the heart ? (a) renal vein (b) pulmonary vein (c) vena cava (d) hepatic vein