This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'The drug which can be considered as an alternative for splenectomy in severe autoimmune hemolytic anemia is: \nSelect and explain. \nA. Adalimubab, B. Eculizumab, C. Rituximab, D. IV immunoglobulin', 'role': 'user'}, {'content': "Answer: C \nExplanation: Rituximab is effective in more than 80% of patients with severe autoimmune hemolytic anemia not responding to steroids. Ref: Harrison's principles of internal medicine, 18th edition ; Page :882.", 'role': 'assistant'}]