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: Physiology
[{'content': 'The major ejection force in vomiting is provided by \nSelect and explain. \nA. Stomach, B. Reverse peristalsis of intestine, C. Diaphragm, D. Abdominal muscles', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The major ejection force in vomiting is provided by Abdominal muscles.', 'role': 'assistant'}]