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: Ophthalmology
All of the following may be present in Duane's retraction syndrome except: 
Select and explain. 
A. Limitation of abduction, B. Narrowing of palpebral apeure in abduction, C. Suppression, D. Head turn
B: Narrowing of palpebral apeure in abduction
Answer: B: Narrowing of palpebral apeure in abduction 
Explanation: Ans. Narrowing of palpebral apeure in abduction