This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid & Electrolyte, Subject name: Surgery
Trousseaus sign is seen in - 
Select and explain. 
A. Hypocalcemia, B. Hypercalcemia, C. Hypokalemia, D. Hyperkalemia
A: Hypocalcemia
Answer: A: Hypocalcemia 
Explanation: Ans. is 'a' i.e., Hypocalcemia * Trousseau's sign: Carpal spasm induced by inflation of a blood pressure cuff to 20 mmHg above the patient's systolic blood pressure for 3 min - is seen in hypocalcemia.