This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc. (R.B.C), Subject name: Pathology
[{'content': 'Direct globulin test is positive in? \nSelect and explain. \nA. PNH, B. Sickle cell anemia, C. Thalassemia, D. Paroxysmal cold hemoglobinuria', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Paroxysmal cold hemoglobinuria(Ref: Robbins 9th/pg 642; 8th/pg 654)Direct globulin test is positive in Paroxysmal cold hemoglobinuria, as anti P antibody is formed.', 'role': 'assistant'}]