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
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 
Select and explain. 
A. cd, B. bc, C. bd, D. ac
A: cd
Answer: A: cd 
Explanation: None