This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
You are assessing the airway of a patient preoperatively. On opening the mouth visibility is limited upto the soft palate. As per Mallampati modified classification what is the grade of the airway? 
Select and explain. 
A. Grade I, B. Grade II, C. Grade III, D. Grade IV
C: Grade III
Answer: C: Grade III 
Explanation: The grades and structures visible are given below: Grade Structures visible opening mouth I Faucial pillars, soft palate and uvula II Faucial pillars, soft palate, uvula marked by the base of the tongue III Soft palate only IV Hard palate is only visible