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 manifestation of severe hemophilia A is 
Select and explain. 
A. Retroperitoneal hemorrhages, B. Recurrent heamarthrosis, C. Recurrent muscle bleeding, D. Recurrent bleeding from gums
B: Recurrent heamarthrosis
Answer: B: Recurrent heamarthrosis 
Explanation: Recurrent heamarthrosis is a common manifestation of moderate / severe disease.