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: ENT
[{'content': 'Pierre Robbin syndrome does not include \nSelect and explain. \nA. Hearing loss, B. Respiratory distress, C. Coloboma Iris, D. Mandibular dysplasia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]