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
Pupil is small in all of the following except: 
Select and explain. 
A. During sleep, B. Adie's pupil, C. Argyll Robeson pupil, D. Pontine haemorrhage
B: Adie's pupil
Answer: B: Adie's pupil 
Explanation: Ans. Adie's pupil