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
Pierre Robin syndrome is associated with: 
Select and explain. 
A. Micrognathia, B. Cleft of the lip and plate, C. Tetralogy of fallot, D. Syndactyly
A: Micrognathia
Answer: A: Micrognathia 
Explanation: None