This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of Larynx, Subject name: ENT
[{'content': 'Which of the following statements is true regarding vocal cords? \nSelect and explain. \nA. Two muscles adduct (close) the vocal cords, B. One muscle abducts (opens) the vocal cords, C. One muscle adjusts the length of the vocal cords, D. One muscle adjusts the tension of the vocal cords', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (b) One muscle abducts (opens) the vocal cords(Ref. Scott Brown, 8th ed., Vol 3; 889)All muscles of VC are adductorsThe tensors alter the length, hence tension of vocal cords. There are two tensors of VC.', 'role': 'assistant'}]