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 the following is not a chronic myelopro liferative disorder 
Select and explain. 
A. Polycythemia vera, B. Acute myeloid leukemia, C. CML, D. Essential thrombocytopenia
B: Acute myeloid leukemia
Answer: B: Acute myeloid leukemia 
Explanation: Example of mycloproliferative disorders

Polycythemia vera
1o myelofibrosis
Essential thrompocythemia
CML