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: Microbiology
[{'content': 'The role played by Major Histocompatibility Complex (MHC)-1 and -2 is to: \nSelect and explain. \nA. Transduce the signal to T-cell following antigen recognition, B. Mediate immunogenic class switching, C. Present antigens for recognition by T-cell antigen receptors, D. Enhance secretion of cytokines', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c. Present antigens for recognition by T-cell antigen receptors', 'role': 'assistant'}]