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: Pathology
[{'content': 'Which of the following is the function of MHC I and II? \nSelect and explain. \nA. Signal transduction in T cells, B. Antibody class switching, C. Antigen presentation to T cells, D. Increase the secretion of cytokines', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The function of MHC molecules is to display peptide fragments of protein antigens for recognition by antigen specific T cells.', 'role': 'assistant'}]