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: Unknown
[{'content': 'The muscle which is affected last with DTC is- \nSelect and explain. \nA. Facial, B. Diaphragm, C. Ocular, D. Abdominal', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans-B', 'role': 'assistant'}]