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: Gynaecology & Obstetrics
[{'content': 'Formula used for estimation of the total iron requirement is : \nSelect and explain. \nA. 4 x body weight (kg) x Hb deficit (g/dl), B. 4.4 x body weight (kg) x Hb deficit (g/dl), C. 0.3 x body weight (kg) x Hb deficit (g/dI), D. 3.3 x body weight (kg) x Hb deficit (g/dl)', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b i.e. 4.4 x body (weight kg) x Hb deficit Total iron requirement is calculated by the following formulae : 4.4 X body weight (kg) X Hb deficit (g/dI) 0.3 x weight (lb) x % of Hb deficit 250mg elemental iron or each gm% of Hb deficit Note : Weight in kg = wt in lb x 2.2', 'role': 'assistant'}]