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
Patients suffering from multidrug resistant tuberculosis can be treated with all the following durgs except - 
Select and explain. 
A. Tobramycin, B. Amikacin, C. Ciprofoxacin, D. Clarithromycin
A: Tobramycin
Answer: A: Tobramycin 
Explanation: Ans. is 'a' i.e., Tobramycin Tobramycin is not an antitubercular aminoglycoside.