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: Pediatrics
A child with an obvious rash presents with recurrent infections. Investigation revealed decreased platelet count and reduced 1gM. Which of the following is the most likely diagnosis - 
Select and explain. 
A. Idiopathic Thrombocytopenic Purpura, B. Thrombotic Thrombocytopenic Purpura, C. Wiskott-Aldrich Syndrome, D. All
C: Wiskott-Aldrich Syndrome
Answer: C: Wiskott-Aldrich Syndrome 
Explanation: Ans. is 'c' i.e., Wiskott Aldrich Syndrome The classical triad of rash, thrombocytopenia and recurrent infection (immunodeficiency; .LIgM) suggest a diagnosis of Wiskott-Aldrich Syndrome.