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': 'Hypocalcemia is characterized by all of the following features except - \nSelect and explain. \nA. Numbness and tingling of circumoral region, B. Hyperactivity tendon reflexes, C. Shortening of Q-T interval in ECG, D. Carpopedal spasm', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]