Which sequence below best represents the circulation of oxygen-deficient blood from a capillary network in the big toe to the lungs?

• A. capillary beds → arteriole → artery → superior vena cava → right atrium → right ventricle → pulmonary veins → lungs
• B. capillary beds → venule → vein → inferior vena cava → left atrium → left ventricle → pulmonary arteries → lungs
• C. capillary beds → venule → vein → inferior vena cava → right atrium → right ventricle → aorta → lungs
• D. capillary beds → venule → vein → inferior vena cava → right atrium → right ventricle → pulmonary arteries → lungs

Answer: (D)