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
Thrombotic thrombocytopenic purpura is a syndrome characterized by: 
Select and explain. 
A. Thrombocytosis, anemia, neurologic abnormalities, progressive renal failure and fever., B. Thrombocytopenia, anemia, neurologic abnormalities, progressive hepatic failure and fever, C. Thrombocytosis, anemia neurologic abnormalities, progressive renal failure and fever, D. Thrombocytopenia, anemia, neurological abnormalities, progressive renal failure and fever
D: Thrombocytopenia, anemia, neurological abnormalities, progressive renal failure and fever
Answer: D: Thrombocytopenia, anemia, neurological abnormalities, progressive renal failure and fever 
Explanation: Answer is D (Thrombocytopenia, anemia, neurological abnormalities, progressive renal failure and fever) Thrombotic Thrombocytopenic Purpura (TTP) is characterized clinically by the Pentad of Microangiopathic Hemolytic Anemia, Thrombocytopenia. Decreased Renal Function. Disturbed Neurological function and Fever.