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: Biochemistry
[{'content': 'A 5 year old female patient complains of deformed shape of legs. Patient is a strict vegetarian. Lab investigations reveal elevated levels of alkaline phosphatase. This patient is suffering from deficiency of a vitamin whose recommended dietary allowance is- \nSelect and explain. \nA. 300IU, B. 400IU, C. 500IU, D. 600IU', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Deficiency of\xa0vitamin\xa0D\xa0causes rickets in children\xa0and\xa0osteomalacia in\xa0adults. The weight bearing bones are bent\xa0to\xa0form\xa0bow-legs.\xa0 In\xa0rickets, the\xa0plasma level\xa0of\xa0calcitriol\xa0 is\xa0 decreased\xa0 and\xa0 alkaline phosphatase\xa0 activity\xa0 is\xa0 elevated. The daily requirement of\xa0vitamin D\xa0is\xa0400IU or\xa010 mg of cholecalciferol.\nSatyanarayana- Biochemistry, 3rd edition, pg-127', 'role': 'assistant'}]