This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Pathology
With respect to Acute myelodyspalstic syndrome, all of the following cytogenetic abnormalities are seen except- 
Select and explain. 
A. Trisomy 8, B. deletion of 20q, C. deletion of 5q, D. Monosmy 9
D: Monosmy 9
Answer: D: Monosmy 9 
Explanation: Ans. is 'd' i.e., Monosmy 9 * MDS is frequently associated with chromosomal abnormalities including monosomy 5 and 7, deletion of 5q and 7q, trisomy 8 and deletion of 20q.