Akas Jha,63 yrs, presented with massive splenomegaly,lymphadenopathy and a total leucocyte count of 17000 per mm 3.The flowcytometery showed CD19 positive,CD5 positive,CD23 negative,monoclonal B-cells with bright kappa positively comprising 80% of the peripheral blood lymphoid cells.The most likely diagnosis is:

• A. Follicular lymphoma
• B. Hairy cell leukemia
• C. Mantle cell lymphoma
• D. Splenic lymphoma