This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bleeding Disorders, Subject name: Pathology
A 7 year old boy presented with sudden onset petechiae and purpura. There was a history of URTI 2 weeks back. On examination, there was no hepatosplenomegaly. He is most probably suffering from: 
Select and explain. 
A. ALL, B. Acute viral infection, C. ITP, D. Aplastic Anemia
C: ITP
Answer: C: ITP 
Explanation: Ans. (c) ITP(Ref: 9th/pg 657-658; 8th/pg 667-668)A 7 year old boy presented with sudden onset petechiae and purpura with a history of URTI 2 weeks back and there is no hepatosplenomegaly. He is most probably suffering from ITP. For complete discussion on ITP; Refer to pretext of this chapter.