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
A lady with a long stading thyroid nodule is planned for a subtotoal thyroidectomy. Before the surgery the surgeon must check/ do 
Select and explain. 
A. Serum Calcium levels, B. Serum PTH assay, C. Indirect Larngoscopy, D. Iodine 131 scan
C: Indirect Larngoscopy
Answer: C: Indirect Larngoscopy 
Explanation: Answer- C. Indirect LarngoscopyNerve Damage to recurrent / superior laryngeal nerve is a known complication of thyroidectomy.Hence it is impoant to document the state ofthe vocal cords before surgery to prevent litigation liability.