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: Medicine
[{'content': 'Most common inherited thrombotic disorder is - \nSelect and explain. \nA. Protein C deficiency, B. Protein S deficiency, C. Factor V leiden mutation, D. tPA deficiency', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]