This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
[{'content': 'The difference between iron sorbitol-citric acid and iron dextran is that the former:- \nSelect and explain. \nA. Cannot be injected i.v., B. Is not bound to transferrin in plasma, C. Is not excreted in urine, D. Produces fewer side effects', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Iron sorbitol citrate should not be used i.v. because it may rapidly saturate the transferrin receptors and which can result in Iron toxicity due to more free Iron. IRON - DEXTRAN IRON-SORBITOL-CITRATE can be given i/v or i/m only i/m not excreated in urine about 30% excreated in urine absorbed through lymphatics absorbed directly in circulation not bound to transferrin bound to transferrin & may saturate it when given in high doses', 'role': 'assistant'}]