This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Treatment of choice for LegionnaEUR' aiere's disease is: 
Select and explain. 
A. TC, B. Erythromycin, C. Penicillin, D. Streptomycin
B: Erythromycin
Answer: B: Erythromycin 
Explanation: Erythromycin