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': 'True about oral iron supplements used for iron deficiency anaemia \nSelect and explain. \nA. The 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 haemoglobin level is reached, D. The desired rate of haemoglobin improvement is 0.5 mg  per day', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Tolerable dose of elemental iron is 200 mg per day in three divided doses i.e. app. 60 mg per dose.\n\nMass 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 haemoglobin level to replenish the stores.\nThe desired rate of haemoglobin improvement is 0.5 to 1 mg per week (not day).', 'role': 'assistant'}]