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
Treacher collins syndrome, all are present except - 
Select and explain. 
A. Aural artesia, B. Webbed neck, C. Hypoplasia of mandible, D. Atrophic lid margins
B: Webbed neck
Answer: B: Webbed neck 
Explanation: None