This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Which of the following is termed as vidian nerve? 
Select and explain. 
A. Lesser petrosal nerve, B. Greater petrosal nerve, C. Lesser ethmoidal nerve, D. Great sphenoidal nerve
B: Greater petrosal nerve
Answer: B: Greater petrosal nerve 
Explanation: The nerve of the pterygoid canal (Vidian nerve) is formed by the junction of the greater petrosal nerve and the deep petrosal nerve within the pterygoid canal containing the cailaginous substance, which fills the foramen lacerum. Ref - pubmed.com