This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Targeted Anticancer Drugs and Immunosuppressants, Subject name: Pharmacology
[{'content': "Rituximab is a monoclonal antibody used for treatment of:- \nSelect and explain. \nA. Non-Hodgkin's lymphoma, B. Gastrointestinal Stromal Tumors, C. Chronic Myeloid Leukemia, D. Acute Myeloid Leukemia", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Rituximab is a monoclonal antibody against CD20. It is used for treatment of: Non-Hodgkin lymphoma Chronic lymphoid leukemia Rheumatoid ahritis SLE Auto-immune hemolytic anemia Idiopathic thrombocytopenic purpura', 'role': 'assistant'}]