This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
Broncho penumonia due to measles occurs due to 
Select and explain. 
A. Sinusitis, B. Immunomodulation, C. Bronchial obstruction, D. Aspiration
B: Immunomodulation
Answer: B: Immunomodulation 
Explanation: Most complications of measles involve the respiratory tract ,like broncho pneumonia and it result from secondary bacterial infections of the respiratory tract that are attributable to a state of immunosuppression lasting for several weeks to months after acute measles. reference:Harrison' s medicine-18th edition,page no:1603.