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 not true regarding Gleason grading and scoring? \nSelect and explain. \nA. It is used in prostate cancer, B. Prostate specific antigen has score of 3, C. It has score from 2 to 10, D. It is a prognostic scoring system', 'role': 'user'}, {'content': "Answer: B \nExplanation: It is pathological scoring system based on tumor morphology. Doesn't include PSA values", 'role': 'assistant'}]