During a surgery, the surgeon's manipulations in the area between the stomach and liver were extremely careful, to avoid damaging the hepatoduodenal ligament, because it contains:

Answer options

1. Proper hepatic artery. gastroduodenal artery
2. Hepatic portal vein, hepatic veins
3. Common bile duct, proper hepatic artery, hepatic portal vein
4. Inferior vena cava, cystic duct
5. Common bile duct, common hepatic artery, inferior vena cava