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
During preanaesthetic evaluation Anaesthetist wrote Mallampati grade 3 what it signifies:- 
Select and explain. 
A. A large tongue, B. Decreased neck movement, C. A big epiglottis, D. Trismus
A: A large tongue
Answer: A: A large tongue 
Explanation: 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