input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which is the best anticoagulant to send sample for serum electrolyte measurement?   (A) EDTA   (B) Lithium heparin   (C) Sodium fluoride   (D) Citrate
output: ['(B) Lithium heparin <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) EDTA  (B) Lithium heparin  (C) Sodium fluoride  (D) Citrate <> possible answers', '  Which is the best anticoagulant to send sample for serum electrolyte measurement? <> context']