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': 'Agents/Drugs which help in rapid coagulation of Blood \nSelect and explain. \nA. Astringents, B. Styptics, C. Haemostatics, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]