Anatomy Double inferior vena cava is formed due to? A Persistence of sacrocardinal veins B Persistance of supracardinal veins C Persistance of subcardinal veins D Persistance of both supracardinal and subcardinal veins 💡 Explanation Double inferior vena cava is formed due to? ✓ Correct Answer: D. Persistance of both supracardinal and subcardinal veins