This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anaesthesia
This can be used for securing the airway of a patient in all of the following conditions except <img src=" /> 
Select and explain. 
A. In a difficult intubation, B. In cardiopulmonary resuscitation, C. In a child undergoing an elective/routine eye surgery, D. In a patient with a large tumor in the oral cavity
D: In a patient with a large tumor in the oral cavity
Answer: D: In a patient with a large tumor in the oral cavity 
Explanation: .