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: Pathology
Erythrocyte Sedimentation Rate is zero in- 
Select and explain. 
A. Abetalipoproteinemia, B. Afibrinogenemia, C. Asplenia, D. Aplastic anemia
B: Afibrinogenemia
Answer: B: Afibrinogenemia 
Explanation: Ans. is 'b' i.e., Afibrinogenemia