This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pre Anesthetic Evaluation, Subject name: Anaesthesia
[{'content': 'During preanaesthetic evaluation Anaesthetist wrote Mallampati grade 3 what it signifies:- \nSelect and explain. \nA. A large tongue, B. Decreased neck movement, C. A big epiglottis, D. Trismus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: other predictors of difficult intubation. Thyromental distance <6.5 cm with head in maximum extension Sterno-mental distance <12 cmwith head in maximum extension Increased neck circumference (>17 inches in men or >16 inches in women) Upper lip bite test :Inability to protrude the mandible or lower teeth in front of the upper teeth', 'role': 'assistant'}]