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: Unknown
Goodpasture syndrome has antibodies against: 
Select and explain. 
A. Collagen 1, B. G-y or x-y of collagen, C. Collagen 4, D. Collagen 2
C: Collagen 4
Answer: C: Collagen 4 
Explanation: (Refer: Robbins Pathologic Basis of Disease, 8thedition, pg no: 709)