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
Morphine is used in the treatment of which one of the following: 
Select and explain. 
A. Asthma, B. Kyphoscoliosis, C. Chronic cor pulmonale, D. Left ventricular failure
D: Left ventricular failure
Answer: D: Left ventricular failure 
Explanation: None