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
30 year old Suresh has found to have bilateral lymphadenitis with non caseating granulomas. Your diagnosis is? 
Select and explain. 
A. TB, B. Lymphoma, C. Sarcoidosis, D. Any of the above
C: Sarcoidosis
Answer: C: Sarcoidosis 
Explanation: Sarcoidosis is a multisystem inflammatory disease of unknown etiology that predominantly affects the lungs and intrathoracic lymph nodes. Sarcoidosis is manifested by the presence of noncaseating granulomas (NCGs) in affected organ tissues. T cells play a central role in the development of sarcoidosis.