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
Evan's syndome refers to presence of which of the following hematologic changes? 
Select and explain. 
A. Autoimmune thrombocytopenia in autoimmune hemolytic anemia, B. DIC in autoimmune hemolytic anemia, C. Thrombocytopenia in hairy cell leukemia, D. Thrombocytosis in autoimmune hemolytic anemia
A: Autoimmune thrombocytopenia in autoimmune hemolytic anemia
Answer: A: Autoimmune thrombocytopenia in autoimmune hemolytic anemia 
Explanation: Some cases of autoimmune hemolytic anemia can be associated with autoimmune thrombocytopenia, known as Evan's syndrome. Ref: Harrison's principles of internal medicine, 18th edition, Page 881.