The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which acid is formed in the citric acid cycle?   (A) Oxaloacetic acid   (B) Glutamic acid   (C) Nitric acid   (D) None of the above
['(A) Oxaloacetic acid <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Oxaloacetic acid \n (B) Glutamic acid \n (C) Nitric acid \n (D) None of the above <> possible answers', '  Which acid is formed in the citric acid cycle? <> context@']