This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'Puerperal sepsis is due to spread of Infection along which route : \nSelect and explain. \nA. Direct extension, B. Aerial, C. Venous, D. Lymphatics', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Direct extension', 'role': 'assistant'}]