A 70-year-old man presents with painless lymphadenopathy, night sweats, fever, and weight loss. Lymph node biopsy reveals Reed-Sternberg cells. Which is the most likely diagnosis?ANon-Hodgkin lymphomaBHodgkin lymphomaCChronic lymphocytic leukaemiaDMultiple myelomaEAcute lymphoblastic leukaemiaCheck my answer