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': 'The role played by Major Histocompatibility Complex-1 and -2 is to \nSelect and explain. \nA. Transduce the signal to T-cells following antigen recognition, B. Mediate immunogenic class switching, C. Present antigens for recognition by T-cell antigen receptors, D. Enhance the secretion of cytokines', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The role played by Major Histocompatibility Complex-1 and -2 is to present antigens for recognition by T\ncell antigen receptors.\n‘Main function of MHC molecule is to bind peptide fragments of foreign protein for presentation to\xa0appropriate antigen-specific T cells.’', 'role': 'assistant'}]