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: Pathology
[{'content': 'Keloid scars is made up of- \nSelect and explain. \nA. Dense collagen, B. Loose fibrous tissue, C. Granulamatous tissue, D. Loose areolar tissue', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Dense Collagen", 'role': 'assistant'}]