A girl child with fever, cough, dysponea with X-ray showing right lower lobe patchy consolidation, for which treatment was given.After 8 weeks symptoms improved but X-ray showed more dense consolidation involving the whole of the right lower lobe.What is the next best line of investigation ?

A girl child with fever, cough, dysponea with X-ray showing right lowe

1.	A girl child with fever, cough, dysponea with X-ray showing right lower lobe patchy consolidation, for which treatment was given.After 8 weeks symptoms improved but X-ray showed more dense consolidation involving the whole of the right lower lobe.What is the next best line of investigation ?
A.	Barium esophagogram
B.	Allergic skin test
C.	Bronchoscopy
D.	Culture from nasopharynx
Answer» D. Culture from nasopharynx