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
Sensory supply of vocal cord is 
Select and explain. 
A. Internal laryngeal nerve, B. Recurrent laryngeal nerve, C. Superior laryngeal nerve, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: "Above the vocal cords, the sensory innervations of the larynx is internal laryngeal nerve (a branch of superior laryngeal nerve). Below vocal cords, it is by the branches of recurrent laryngeal nerve. The vocal cord itself receives dual innervations from both nerves". Ref: PL Dhingra, Diseases of Ear, Nose & Throat, 7th edition, pg no. 322