This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and PNS, Subject name: ENT
Structure(s) passing between middle and inferior constrictor muscles of pharynx is/are: 
Select and explain. 
A. Superior laryngeal artery and vein, B. Styloglossus, C. Internal laryngeal branch of superior laryngeal nerve, D. Only (a) and (c)
D: Only (a) and (c)
Answer: D: Only (a) and (c) 
Explanation: Superior laryngeal vessels and internal laryngeal branch of superior laryngeal nerve which supplies pyriform fossa and sensory fibres to larynx above the level of vocal cord enters through thyrohyoid membrane between middle and inferior constrictors.