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
Which one of the following drugs does not undergo the hepatic first-pass effect: 
Select and explain. 
A. Propanolol, B. Lidocaine, C. Insulin, D. Morphine
C: Insulin
Answer: C: Insulin 
Explanation: None