This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
A previously healthy child has sudden onset of red spots on body. There is a history of a preceding viral infection 1-4 weeks before the onset. 
Select and explain. 
A. Dengue fever, B. Hemophilia A, C. Thrombotic thrombocytopenic purpura, D. Idiopathic thrombocytopenic purpura
D: Idiopathic thrombocytopenic purpura
Answer: D: Idiopathic thrombocytopenic purpura 
Explanation: d. Idiopathic thrombocytopenic purpuraAcute onset purpura and thrombocytopenia in a previously healthy child, with preceding history of viral infection is suggestive of ITP