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: Pediatrics
[{'content': 'The most common presentation of hyperparathyroidism beyond the neonatal period is – \nSelect and explain. \nA. Syncope secondary to prolonged QT intervals, B. Tingling of extremities, C. Seizure, D. Bronchospasm', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Musculoskeletal pain and cramps are the earliest symptoms and progress to numbness, stiffness and tingling of the hands and feet.\nThese are symptoms of tetany due to hypocalcemia.', 'role': 'assistant'}]