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: Gynaecology & Obstetrics
26 years old female suffers from PPH on her second postnatal day. Her APTT and PTT are prolonged while BT, PT and platelet counts are normal. Likely diagnosis is: 
Select and explain. 
A. Acquired hemophilia, B. Lupus anticoagulant, C. DIC, D. Inherited congenital hemophilia.
A: Acquired hemophilia
Answer: A: Acquired hemophilia 
Explanation: None