This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'Humoral immunodeficiency is suspected in a patient and he is under investigation. Which of the following infections would not be consistent with the diagnosis: \nSelect and explain. \nA. Giardiasis, B. Pneumocystis carinii pneumonia, C. Recurrent sinusitis, D. Recurrent subcutaneous abscesses', 'role': 'user'}, {'content': "Answer: B \nExplanation: Pneumocystis carnii pneumonia is associated with deficient cell-mediated immunity and not with humoral immunodeficiency(ref: Harrison's 18/e p2699)", 'role': 'assistant'}]