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 young person presents with a history of severe menorrhagia. She has palpable spleen. Her bleeding time is prolonged with a normal clotting time. Platelet count is normal .The most likely diagnosis is - 
Select and explain. 
A. Haemophilia, B. Henoch-Scholeim purpura, C. Thrombosthenic purpura, D. Allergic purpura
C: Thrombosthenic purpura
Answer: C: Thrombosthenic purpura 
Explanation: None