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: Medicine
[{'content': 'Patient with MCV = 60, b = 5 gm % MCHC = 20 & PCV = 32 %, causes of anemia in him can be-a) Phenytoinb) Blind loop syndc) Hook worm infectiond) CRFe) Renal dialysis \nSelect and explain. \nA. cd, B. bc, C. bd, D. ac', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]