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: Pathology
Direct coombs test is positive in hemolytic anaemia due to - 
Select and explain. 
A. Paroxysmal cold hemoglobinuria, B. Paroxysmal nocturnal hemoglobinuria, C. Hereditary spherocytosis, D. Idiopathic thrombocytopenic prpura
A: Paroxysmal cold hemoglobinuria
Answer: A: Paroxysmal cold hemoglobinuria 
Explanation: None