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
Which of the following actions is ascribed to delta type of opioid receptors ? 
Select and explain. 
A. Supraspinal analgesia, B. Respiratory depression, C. Euphoria, D. Reduced intestinal motility
A: Supraspinal analgesia
Answer: A: Supraspinal analgesia 
Explanation: None