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: Pediatrics
[{'content': 'Child presents with micrognathia, retrognathia and Glossoptosis. What is the most probable diagnosis \nSelect and explain. \nA. Russel - Silver Syndrome, B. Angelman Syndrome, C. Pierre Robin Syndrome, D. Treacher Collin Syndrome', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]