input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Thiamine deficiency decreases cellular metabolism because:   (A) Thiamine is a coenzyme for pyruvate dehydrogenase and alfa-ketoglutarate dehydrogenases   (B) Activity of transketolase is inhibited   (C) It is required for the process of transamination   (D) It is a cofactor in oxidative reduction
output: ['(A) Thiamine is a coenzyme for pyruvate dehydrogenase and alfa-ketoglutarate dehydrogenases <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Thiamine is a coenzyme for pyruvate dehydrogenase and alfa-ketoglutarate dehydrogenases  (B) Activity of transketolase is inhibited  (C) It is required for the process of transamination  (D) It is a cofactor in oxidative reduction <> possible answers', '  Thiamine deficiency decreases cellular metabolism because: <> context']