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: Medicine
Which is the most common organ involved in sarcoidosis 
Select and explain. 
A. Lung, B. Liver, C. CNS, D. Eye
A: Lung
Answer: A: Lung 
Explanation: Ans. is 'a' i.e., Lung