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
What difficulty is assessed by Mallampati classification during intubation - 
Select and explain. 
A. Inadequate neck movement, B. Inadequate mouth opening, C. Large tongue, D. Receding mandible
C: Large tongue
Answer: C: Large tongue 
Explanation: The Mallampati classification has become the standard for assessing the relationship of the tongue size relative to oral cavity.