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: Pathology
[{'content': 'Pierre Robin syndrome is associated with: \nSelect and explain. \nA. Micrognathia, B. Cleft of the lip and plate, C. Tetralogy of fallot, D. Syndactyly', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]