This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pediatrics
Which of the following has least on life expectancy since point of diagnosis ? 
Select and explain. 
A. Chronic myeloid leukemia, B. Chronic lymphoid leukemia, C. Acute myeloid leukemia, D. Acute lymphoid leukemia
B: Chronic lymphoid leukemia
Answer: B: Chronic lymphoid leukemia 
Explanation: Chronic myeloid leukemia (CML) have least life expectancy especially juvenile form compared to other leukemia. Reference: GHAI Essential pediatrics, 8th edition