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 30 year old female patient complains of weakness and fatigue. Patient gives history of consumption of antiepileptic drugs and is also a lactating mother. Lab investigation reveals Hb-8gm% and presence of macrocytic RBCs on peripheral blood smear. This patient may be suffering from deficiency of- \nSelect and explain. \nA. Vitamin C, B. Vitamin B1, C. Vitamin B2, D. Vitamin B9', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The folic acid deﬁciency(vitamin B9) may be due to (one or more causes) inadequate dietary intake, defective\xa0 absorption, use of anti convulsant drugs (phenobarbitone, dilantin, phenytoin), and increased\xa0 demand.\xa0\nThe rapidly dividing cells of bone marrow are seriously aﬀected.\xa0\nThe macrocytic anemia\xa0 (abnormally large RBC) associated with megaloblastic changes in bone marrow is a characteristic\xa0 feature of folate deﬁciency.\n\nSatyanarayana- Biochemistry, 3rd edition, pg-152', 'role': 'assistant'}]