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: Physiology
Which of the following statement about Bradykinin is true: 
Select and explain. 
A. Causes pain, B. Causes bronchodilation, C. Causes vasoconstriction, D. Decreases vascular permeability
A: Causes pain
Answer: A: Causes pain 
Explanation: A i.e. Causes PainBradykinin increases vascular permeability, and causes contraction of smooth muscle (utrine, intestine, bronchoconstriction), dilation of blood vessels and painQ when injected into the skin. These effects are similar to those of histamine.