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: Microbiology
Bradykinin causes: 
Select and explain. 
A. Vasoconstriction, B. Pain at the site of inflammation, C. Bronchodilation, D. Decreased vascular permeability
B: Pain at the site of inflammation
Answer: B: Pain at the site of inflammation 
Explanation: Bradykinin acts in the early stage of inflammation and its effects include:

Smooth muscle contraction
Vasodilatation
Increased vascular permeability
Pain.

Mohan H. Textbook of pathology. Jaypee Brothers Medical Publishers; 2015. Page: 126