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: Microbiology
The drug of choice for chemoprophylaxis in contacts of a patient of pneumonic plague is - 
Select and explain. 
A. Penicillin., B. Rifampicin, C. Erythromycin, D. Tetracycline
D: Tetracycline
Answer: D: Tetracycline 
Explanation: None