This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Anatomy
[{'content': 'Chvostek/Weiss sign seen in which poisoning \nSelect and explain. \nA. Oxalic acid poisoning, B. Carbolic acid poisoning, C. Boric acid poisoning, D. Formic acid poisoning', 'role': 'user'}, {'content': 'Answer: A \nExplanation: acute poisoning. the patient may suffer from tingling and paresthesia, intermittent cramps and carpopedal spasm due to hyperirritability of peripheral nerves(Chvostek/Weiss sign) as a result of hypocalcemia. Patient may go into stupor, coma, and death may be due to respiratory failure. Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 412', 'role': 'assistant'}]