This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infectious disease, Subject name: Pediatrics
First line ATT in children 
Select and explain. 
A. Streptomycin, B. Pyrazinamide, C. Ethionamide, D. 1 & 2
D: 1 & 2
Answer: D: 1 & 2 
Explanation: *The first line drugs in ATT are effective with minimal toxicity and include isoniazid,rifampicin,ethambutol,streptomycin and pyrazinamide.Ethionamide is a second line drug. * In a view of increasing INH resistance, use of three drugs (INH, Rifamipicin , and ethambutol) instead of two (INH and rifampicin) is suggested during the continuous phase . Reference : Ghai essential pediatrics 9 th edition Page 249