This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Factor present in the final common terminal complement pathway is - \nSelect and explain. \nA. C4, B. C3, C. C5, D. Protein B', 'role': 'user'}, {'content': 'Answer: C \nExplanation: formation of C5 convease and finally the membrane attack complex is common in all the three pathways. Ref Robbins 9/e p 331_333', 'role': 'assistant'}]