This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Larynx, Subject name: ENT
Which of the following is Tensor of the vocal cord 
Select and explain. 
A. Cricothyroid, B. Inter arytenoid, C. Posterior cricoarytenoid, D. Lateral cricoarytenoid
A: Cricothyroid
Answer: A: Cricothyroid 
Explanation: Intrinsic muscles of larynx They may act on vocal cords or laryngeal inlet. (a) Acting on vocal cords:- * Abductors:- Posterior cricoarytenoid * Adductors:- Lateral cricoarytenoid , Interarytenoid (transverse arytenoid), Thyroarytenoid (external pa) * Tensors:- Cricothyroid , Vocalis (internal pa of thyroarytenoid). Ref:- Dhingra; pg num:-283