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: ENT
Sensory nerve supply of larynx below the level of vocal cord is: 
Select and explain. 
A. External branch of superior laryngeal nerve, B. Internal branch of superior laryngeal nerve, C. Recurrent laryngeal nerve, D. Inferior pharyngeal
C: Recurrent laryngeal nerve
Answer: C: Recurrent laryngeal nerve 
Explanation: Nerve supply of larynx

Sensory:

––The internal laryngeal nerve supplies the mucous membrane up to the level of the vocal folds.
––The recurrent laryngeal nerve supplies below the level of the vocal folds.

Motor:

––All intrinsic muscles of the larynx are supplied by the recurrent laryngeal nerve except for the cricothyroid
which is supplied by the external laryngeal nerve.