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
[{'content': 'Mechanism of action of transexaminic acid is \nSelect and explain. \nA. Decrease vascular permeability, B. Smooth muscle contraction, C. Activates Plasmin formation, D. Prevents fibrinolysis', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `d' i.e., Prevents fibrinolysis", 'role': 'assistant'}]