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': 'NA hich of the 10110N% ing is not a cause of point mutation \nSelect and explain. \nA. Paracentric inversion, B. Deletion, C. Substitution, D. Inseion', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Paracentric inversion', 'role': 'assistant'}]