6. Which of the following describes the correct passage of blood originating from the left leg? a. Vena cava – left atrium - right atrium lungs left ventricle-right ventricle - aorta b. Vena cava => right atrium - left atrium - lungs right ventride left ventride- aorta c. Vena cava - left atrium left ventricle lungs right atrium right ventride - sorta d. Vena cava - right atrium right ventricle lungs-left atrium-left ventricle -- aorta