The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Thiamine deficiency is assessed by:   (A) Erythrocyte transketolase activity   (B) RBS Glutathione reductase   (C) RBC thiamine levels   (D) Serum thiamine level
['(A) Erythrocyte transketolase activity <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Erythrocyte transketolase activity \n (B) RBS Glutathione reductase \n (C) RBC thiamine levels \n (D) Serum thiamine level <> possible answers', '  Thiamine deficiency is assessed by: <> context@']