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
In type-4 thyroplasty, vocal cord is 
Select and explain. 
A. Medially displaced, B. Laterally displaced, C. Lengthened, D. Shoened
C: Lengthened
Answer: C: Lengthened 
Explanation: Type IV thyroplasty- This procedure is used to lengthen (tighten) the vocal cord and elevate the pitch. It conves male character of voice to female and has been used in gender transformation. It is also used when vocal cord is lax and bowing due to ageing process or trauma. Ref: PL Dhingra Textbook of Ear, Nose and Throat, Edition 6, page -302