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
[{'content': 'Vitamin K is involved in action of following protein except - \nSelect and explain. \nA. Factor II, B. Factor X, C. Factor I, D. Protein C', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Factor I", 'role': 'assistant'}]