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
Most common inherited cause of Aplastic anemia 
Select and explain. 
A. Idiopathic, B. Fanconi anemia, C. Scwachman - diamond syndrome, D. Down syndrome
B: Fanconi anemia
Answer: B: Fanconi anemia 
Explanation: M/C acquired cause - Idiopataic.
M/C inherited - Fanconi anemia.