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
In LVF,  the drug which can be administered is: 
Select and explain. 
A. Propranolol, B. Morphine, C. Amlodipine, D. Epinephrine
B: Morphine
Answer: B: Morphine 
Explanation: None