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: Surgery
[{'content': 'A patient undergoes thyroid surgery, following which he develops perioral tingling. Blood Ca is 8.9 meq; Next step is - \nSelect and explain. \nA. Vit D orally, B. Oral Ca and vit D, C. Intravenous calcium gluconate and serial monitoring, D. Wait for Ca to decrease to < 7.0 before taking further action.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]