This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'The tumor suppressor gene p 53 induces cell cycle arrest at - \nSelect and explain. \nA. G2- M phase, B. S G2phase, C. G1 phase, D. Go phase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Harshmohan textbook of pathology 7th edition. In blocking mitotic activity p53 inhibits the cyclins and CDKs and prevent the cell to enter G1 phase transientally. .', 'role': 'assistant'}]