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': 'Goodpasture syndrome has antibodies against - \nSelect and explain. \nA. Collagen 1, B. G-y or x-y of Collagen, C. Collagen 4, D. Collagen 2', 'role': 'user'}, {'content': 'Answer: C \nExplanation: . Collagen 4', 'role': 'assistant'}]