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': 'Lupus anticoagulants may cause all of the following except- \nSelect and explain. \nA. Recurrent abortion, B. False +ve VDRL results, C. Increase prothrombin time, D. Arterial thrombosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]