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: Surgery
[{'content': 'Ventral hernia is a/an - \nSelect and explain. \nA. Incisional hernia, B. Umbilical hernia, C. Femoral hernia, D. Inguinal hernia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]