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': 'Decerebrate  rigidity is characterised by all except \nSelect and explain. \nA. Abnormal extensor response, B. Wrists and fingers flexed, C. Arms flexed at elbow, D. Plantar flexion of foot', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Decerebrate rigidity is characterised by adducted arms and extended elbow', 'role': 'assistant'}]