This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Anatomy
Thyroid Ca causes laryngeal paralysis due to 
Select and explain. 
A. Recurrent laryngeal nerve palsy, B. Vagus nerve palsy, C. Glossopharyngeal nerve palsy, D. Hypoglossal nerve palsy
A: Recurrent laryngeal nerve palsy
Answer: A: Recurrent laryngeal nerve palsy 
Explanation: The nerves found in close relationship to the thyroid gland and therefore likely to be involved in the malignant spread and thyroid surgery are recurrent laryngeal nerve and the superior laryngeal nerve. Ref : Schwaz Surgery 9/e p1346