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
A 25 year old pregnant lady is investigated to have leukocytosis, platelet count < 50,000 and fragmented RBC's in peripheral smear. Which of the following is the least likely differential diagnosis? 
Select and explain. 
A. DIC, B. TTP, C. HELLP, D. Evan's syndrome
D: Evan's syndrome
Answer: D: Evan's syndrome 
Explanation: Among the options provided Evan's syndrome is least likely to present with fragmented RBC's. Ref: 1. Harrison's Principles of Internal Medicine, 16th Edition, Page 612.