A 60 year old man presented with fatigue, weight lossand heaviness in left hypochondrium for 6 months.The hemogram showed Hb. lOgm/dL, TLC 5lakhs/mm3, platelet count 4 lakhs/mm3, DLC;neutrophil 55%, lymphocutes 4%, monocytes 2%,basophils 6%, metamyelocytes 10%, myelocytes18%, promyelocytes 2% and blasta 3%. The mostlikely cytogenetic abnormality in this case is
. t (9; 22)
t (1; 21)
t (9; 22)
t (15; 17)
Trisomy 21