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: Pathology
Which of these is true regarding CML -a) Size of splenomegaly indicates prognosisb) Phagocytic activity of WBC is reducedc) Sudan black stain is specific for myeloblastd) Myeloblast, granuloblast and lymphoblast are PH chromosome +ve. 
Select and explain. 
A. b, B. c, C. ac, D. ad
D: ad
Answer: D: ad 
Explanation: None