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 drugs is used in  MI ? 
Select and explain. 
A. Cocaine, B. Pethidine, C. Morphine, D. Butorphanol
C: Morphine
Answer: C: Morphine 
Explanation: None