This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'For oral iron supplements used for iron deficiency anemia : \nSelect and explain. \nA. Tolerable dose will deliver 40 to 60 mg of iron per day, B. Mass of total salt is important in determining daily dose, C. Treatment should be stopped as soon as normal hemoglobin level is reached, D. Desired rate of hemoglobin improvement is 0.5 mg per day', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The tolerable dose of elemental iron is 200 mg per day in three divided doses i.e. app. 60 mg per dose. Mass of elemental iron is more important in determining daily dose rather than a mass of total salt because different salts provide a different amount of elemental iron.\nTreatment with oral iron should be continued even after reaching the desired hemoglobin level to replenish the stores.\nThe desired rate of hemoglobin improvement is 0.5 to 1 mg per week (not day).', 'role': 'assistant'}]