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: Pharmacology
Actions of opiates in man include all except: 
Select and explain. 
A. Constipation, B. Vomiting, C. Analgesia, D. Mydriasis
D: Mydriasis
Answer: D: Mydriasis 
Explanation: None