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: Biochemistry
[{'content': 'Frame shift mutation is caused by \nSelect and explain. \nA. Deletion, B. Substitution, C. Inversion, D. Transition', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Insertion and deletion causes Frame shift mutation.', 'role': 'assistant'}]