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: Surgery
[{'content': 'Bleeding caused in a extraction socket due to wound sepsis after few days is called as \nSelect and explain. \nA. Primary hemorrhage, B. Reactionary hemorrhage, C. Secondary hemorrhage, D. Systemic hemorrhage', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]