This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Which of the following drug is used in MI? 
Select and explain. 
A. Cocaine, B. Pethidine, C. Morphine, D. Butrophanol
C: Morphine
Answer: C: Morphine 
Explanation: Morphine - an opioid- relieves severe pain in MI thereby decreasing patient's apprehension no other painkiller is suitable for MI REF: KD Tripathi 8th ed