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': 'Gluconeogenesis can occur from all except : \nSelect and explain. \nA. Lactic acid, B. Aceto acetate, C. Glycerol, D. Alanine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Acetoacetate', 'role': 'assistant'}]