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
[{'content': 'Type 1 thyroplasty is for \nSelect and explain. \nA. Vocal cord shoening, B. Vocal cord lengthening, C. Vocal cord medialization, D. Vocal cord lateralization', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Thyroplasty types Type I: It is medial displacement of vocal cord as in achieved in Teflon paste injection. Type II: It is lateral displacement of the vocal cord and is used to improve the airway. Type III: It is used to shoen the vocal cord. Relaxation of vocal cord lowers the pitch. This procedure is done in mutational falsetto or in those who have undergone gender transformation from female to male. Type IV: This procedure is used to lengthen the vocal cord and elevate the pitch. It coves the male character to a female and has been used in gender transformation. Ref: Textbook of diseases of ENT, PL Dhingra, 7th edition, pg no. 341', 'role': 'assistant'}]