This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood Physiology, Subject name: Physiology
All the following clotting factors are derived from liver except 
Select and explain. 
A. III, B. V, C. VII, D. IX
A: III
Answer: A: III 
Explanation: Factor 3 is derived from Damaged tissue and activated platelets NOT from Liver.