This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Voice and Speech Disorders, Subject name: ENT
[{'content': 'Thyroplasty Type I is done for vocal cord......... \nSelect and explain. \nA. Medialisation, B. Lateralisation, C. Shortening, D. Lengthening', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans: a (Medialisation) Ref: Dhingra, 3rded, p. 364 & 4thed, p. 278Laryngeal frame work surgery - Isshiki's classificationType I thyroplastyType II thyroplastyType III ThyroplastyType IV thyroplasty- Medial displacement- Lateral displacement- Shortening (relaxation)- Elongation (tensioning) Indications: Type III thyroplastyIndications: Type IV thyroplasty1) Adductor spasmodic dysphonia2) Mutational falsetto3) Gender transformation (female to male)1) Androphonia2) Post surgical defects3) Gender transformation (male to female)", 'role': 'assistant'}]