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
[{'content': 'Morphine can be given by all the following routes except: \nSelect and explain. \nA. Intravenous, B. Intramuscular, C. Subcutaneous, D. Sublingual', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]