This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Tuberculosis, Subject name: Pharmacology
Longest lag period in bacterial growth is associated with - 
Select and explain. 
A. Rifampicin, B. INH, C. Streptomycin, D. Ethambutol
C: Streptomycin
Answer: C: Streptomycin 
Explanation: Ans. is 'd' i.e., Ethambutol Post-antibiotic lag period of antitubercuiar drug Drug Lag period (days) after exposure for 24 hrs. INH 6-9 Rifampicin 2-3 Ethambutol 4-5 Streptomycin 8-10 Pyrazinamide - Ethionamide 10 Cycloserine 4-8 Maxifloxacin 15