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: Radiology
Which of the following projection is contraindicated in patients with cervical spondylitis? 
Select and explain. 
A. Submentovertex view, B. PA view, C. Reverse towne's projection, D. Waters view
A: Submentovertex view
Answer: A: Submentovertex view 
Explanation: Patient's head and neck should be extended backward such that the vertex of the skull is on the centre of the cassette. (So, this projection is contraindicated in patients with cervical spondylitis).