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
Horner syndrome causes all, except: 
Select and explain. 
A. Enophthalmos, B. Mydriasis, C. Anhidrosis, D. Narrowed palpebral fissure
B: Mydriasis
Answer: B: Mydriasis 
Explanation: Mydriasis