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': 'In beta-oxidation of fatty acids, carnitine is required for \nSelect and explain. \nA. Conversion of short chain fatty acids to long chain fatty acids, B. Transport of long chain fatty acid to mitochondrial inner layer, C. Transport of long chain fatty acid to cytoplasm, D. Conversion of long chain fatty acids to short chain fatty acids', 'role': 'user'}, {'content': "Answer: B \nExplanation: Transport of long-chain fatty acid to mitochondria' inner layer", 'role': 'assistant'}]