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 can be given by all the following routes except: 
Select and explain. 
A. Intravenous, B. Intramuscular, C. Subcutaneous, D. Sublingual
D: Sublingual
Answer: D: Sublingual 
Explanation: None