<prompt> During preanaesthetic evaluation Anaesthetist wrote Mallampati grade 3 what it signifies:-A large tongueDecreased neck movementA big epiglottisTrismus  <response>: 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 