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
Drug of choice for Treponema pallidum is : 
Select and explain. 
A. Penicillin G, B. Tetracycline, C. Azithromycin, D. Doxycycline
A: Penicillin G
Answer: A: Penicillin G 
Explanation: None