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: Pathology
Bradykinin causes all the following except 
Select and explain. 
A. Smooth muscle contraction, B. Dilatation of blood vessels, C. Pain, D. Opsonisation
D: Opsonisation
Answer: D: Opsonisation 
Explanation: None