This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology and Rheumatology, Subject name: Medicine
[{'content': 'Most common cranial nerve involved in sarcoidosis: \nSelect and explain. \nA. 3, B. 5, C. 7, D. 8', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. 7* The most common cranial nerve involved in Sarcoidosis is the seventh nerve, which can be affected bilaterally.* Nerve biopsy can reveal non caseating granulomas infiltrating the endoneurium, perineurium, and epineurium along with lymphocytic necrotizing angiitis.* Neuro sarcoidosis may respond to treatment with glucocorticoids or other immunosuppressive agents.', 'role': 'assistant'}]