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
Which one of the following anti-tuberculous drug
has excellent penetration into the cerebrospinal fluid? 
Select and explain. 
A. Ethambutol, B. Pyrazinamide, C. Streptomycin, D. Rifampicin
B: Pyrazinamide
Answer: B: Pyrazinamide 
Explanation: None