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
[{'content': 'Which of the following is termed as vidian nerve? \nSelect and explain. \nA. Lesser petrosal nerve, B. Greater petrosal nerve, C. Lesser ethmoidal nerve, D. Great sphenoidal nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 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', 'role': 'assistant'}]