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
All the following are examples of diseases causing Aplastic anemia except - 
Select and explain. 
A. PNH, B. Hepatitis, C. Pregnancy, D. Cold hemoglobinuria
D: Cold hemoglobinuria
Answer: D: Cold hemoglobinuria 
Explanation: None