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
"Fleeting pulmonary infiltrates" on sequential chest skiagrams in an individual who suffers from asthma are characteristics of- 
Select and explain. 
A. Allergic bronchopulmonary aspergillosis, B. Mycobacteriurn tuberculosis infection, C. Pneumocystis jirovecii pneumonia, D. Nocardia infecation
A: Allergic bronchopulmonary aspergillosis
Answer: A: Allergic bronchopulmonary aspergillosis 
Explanation: Allergic bronchopulmonary aspergillosis is an eosinophilic pneumonia characterised by peripheral blood eosinophilia(>1000/microL)and migratory pulmonary infiltrates in chest Xray.It is usually associated with bronchial asthma.There will be elevated IgE class antibodies specific for A.fumigatus. Reference:Harrison' s medicine-18th edition,page no:2120.