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': 'Thiamine deficiency causes decreased energy production because? \nSelect and explain. \nA. It is required for the process of transamination, B. It is co-factor in oxidative reduction, C. It is co-enzyme for transketolase in pentose phosphate pathway, D. It is co-enzyme for pyruvate dehydrogenase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]