GKFix MCQ Question

Which of the following represents the path of oxygen from the alveoli to the blood?

• A. Endothelium → Basement substance → Alveolar epithelium
• B. Basement substance → Alveolar epithelium → Endothelium
• C. Endothelium → Alveolar epithelium → Basement substance
• D. Alveolar epithelium → Basement substance → Endothelium