This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': 'A patient presents with thrombocytopenia, eczema and recurrent infection - \nSelect and explain. \nA. Wiskott - Aldrich syndrome, B. Digeorge syndrome, C. Agammaglobulinemia, D. SCID', 'role': 'user'}, {'content': "Answer: A \nExplanation: Wiskott-Aldrich syndrome is X linked disease. - characterised by eczema, thrombocytopenic purpura and recurrent infections. Affected boys do not survive first decade of life, death due to infection, hemorrhage and lymphoreticular malignancy. - CMI undergoes progressive deterioration associated with cellular depletion of thymus and the paracoical areas of lymph nodes. Reference : Anathanarayan & paniker's 9th edition, pg no: 174 <\\p>", 'role': 'assistant'}]