This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
Drug of choice for Diphtheria carriers is 
Select and explain. 
A. Erythromycin, B. Tetracycline, C. Amoxycillin, D. Penicillin
A: Erythromycin
Answer: A: Erythromycin 
Explanation: Diphtheria:- Clinical features :- * Present as pharyngo tonsillar form (most common), laryngo tracheal form (most severe) and nasal diphtheria (mild form) Control of diphtheria * Cases to be isolated for 14 days * Treatment- cases- Antitoxin * Treatment Carriers - Ehromycin-10 day course Ref:- K Park, 24th ed; pg num:- 171