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
Laboratory evaluation for the differential diagnosis of chronic myeloproliferative disorders includes all the following except- 
Select and explain. 
A. Chromosomal evaluation, B. Bone marrow aspiration, C. Flow-cytometric analysis, D. Determination of red blood cell mass
C: Flow-cytometric analysis
Answer: C: Flow-cytometric analysis 
Explanation: None